Symfony 4.4.0-BETA1 has just been released. Here is a list of the most important changes:

feature #34333 Revert "feature #34329 [ExpressionLanguage] add XOR operator (ottaviano)" (@nicolas-grekas)
feature #34332 Allow Throwable $previous everywhere (@fancyweb)
feature #34329 [ExpressionLanguage] add XOR operator (@ottaviano)
feature #34312 [ErrorHandler] merge and remove the ErrorRenderer component (@nicolas-grekas, @yceruto)
feature #34309 [HttpKernel] make ExceptionEvent able to propagate any throwable (@nicolas-grekas)
feature #34139 [Security] Add migrating encoder configuration (@chalasr)
feature #32194 [HttpFoundation] Add a way to anonymize IPs (@Seldaek)
feature #34252 [Console] Add support for N _COLOR env var (@Seldaek)
feature #34295 [DI][FrameworkBundle] add EnvVarLoaderInterface - remove SecretEnvVarProcessor (@nicolas-grekas)
feature #31310 [DependencyInjection] Added option ignor _errors: no _found for imported config files (@pulzarraider)
feature #34216 [HttpClient] allow arbitrary JSON values in requests (@pschultz)
feature #31977 Add handling for delayed message to redis transport (@alexander-schranz)
feature #34217 [Messenger] use events consistently in worker (@Tobion)
feature #33065 Deprecate things that prevent Throwable from bubbling down (@fancyweb)
feature #34184 [VarDumper] display the method we're in when dumping stack traces (@nicolas-grekas)
feature #33732 [Console] Rename some methods related to redraw frequency (@javiereguiluz)
feature #31587 [Routing][Config] Allow patterns of resources to be excluded from config loading (@tristanbes)
feature #32256 [DI] Add compiler pass and command to check that services wiring matches type declarations (@alcalyn, @GuilhemN, @nicolas-grekas)
feature #32061 Add new Form WeekType (@dFayet)
feature #33954 Form theme: support Bootstrap 4 custom switches (@romaricdrigon)
feature #33854 [DI] Add ability to choose behavior of decorations on non existent decorated services (@mtarld)
feature #34185 [Messenger] extract worker logic to listener and get rid of SendersLocatorInterface::getSenderByAlias (@Tobion)
feature #34156 Adding DoctrineClearEntityManagerWorkerSubscriber to reset EM in worker (@weaverryan)
feature #34133 [Cache] add DeflateMarshaller - remove phpredis compression (@nicolas-grekas)
feature #34177 [HttpFoundation][FrameworkBundle] allow configuring the session handler with a DSN (@nicolas-grekas)
feature #32107 [Validator] Add AutoMapping constraint to enable or disable auto-validation (@dunglas)
feature #34170 Re-allow to use "tagged" in service definitions (@dunglas)
feature #34043 [Lock] Add missing lock connection string in FrameworkExtension (@jderusse)
feature #34057 [Lock][Cache] Allows URL DSN in PDO adapters (@jderusse)
feature #34151 [DomCrawler] normalizeWhitespace should be true by default (@dunglas)
feature #34020 [Security] Allow to stick to a specific password hashing algorithm (@chalasr)
feature #34131 [FrameworkBundle] Remove suffix convention when using env vars to override secrets from the vault (@nicolas-grekas)
feature #34051 [HttpClient] allow option "buffer" to be a stream resource (@nicolas-grekas)
feature #34028 [ExpressionLanguage][Lexer] Exponential format for number (@tigr1991)
feature #34069 [Messenger] Removing "sync" transport and replacing it with config trick (@weaverryan)
feature #34014 [DI] made the env(base64:...) processor able to decode base64url (@nicolas-grekas)
feature #34044 [HttpClient] Add a canceled state to the ResponseInterface (@Toflar)
feature #33997 [FrameworkBundle] Add secrets: commands and env(secret:...) processor to deal with secrets seamlessly (@Tobion, @jderusse, @nicolas-grekas)
feature #34013 [DI] add LazyString for lazy computation of string values injected into services (@nicolas-grekas)
feature #33961 [TwigBridge] Add show-deprecations option to the lint:twig command (@yceruto)
feature #33973 [HttpClient] add HttpClient::createForBaseUri() (@nicolas-grekas)
feature #33980 [HttpClient] try using php-http/discovery when nyholm/psr7 is not installed (@nicolas-grekas)
feature #33967 [Mailer] Add Message-Id to SentMessage when sending an email (@fabpot)
feature #33896 [Serializer][CSV] Add context options to handle BOM (@malarzm)
feature #33883 [Mailer] added ReplyTo option for PostmarkApiTransport (@pierregaste)
feature #33053 [ErrorHandler] Rework fatal errors (@fancyweb)
feature #33939 [Cache] add TagAwareMarshaller to optimize data storage when using AbstractTagAwareAdapter (@nicolas-grekas)
feature #33941 Keeping backward compatibility with legacy FlattenException usage (@yceruto)
feature #33851 [EventDispatcher] Allow to omit the event name when registering listeners (@derrabus)
feature #33461 [Cache] Improve RedisTagAwareAdapter invalidation logic & requirements (@andrerom)
feature #33779 [DI] enable improved syntax for defining method calls in Yaml (@nicolas-grekas)
feature #33743 [HttpClient] Async HTTPlug client (@Nyholm)
feature #33856 [Messenger] Allow to configure the db index on Redis transport (@chalasr)
feature #33881 [VarDumper] Added a support for casting Ramsey/Uuid (@lyrixx)
feature #33861 [CssSelector] Support :only-of-type (@jakzal)
feature #33793 [EventDispatcher] A compiler pass for aliased userland events (@derrabus)
feature #33791 [Form] Added CountryType option for using alpha3 country codes (@creiner)
feature #33628 [DependencyInjection] added Ability to define a priority method for tagged service (@lyrixx)
feature #33775 [Console] Add deprecation message for non-int statusCode (@jschaedl)
feature #33783 [WebProfilerBundle] Try to display the most useful panel by default (@fancyweb)
feature #33701 [HttpKernel] wrap compilation of the container in an opportunistic lock (@nicolas-grekas)
feature #33789 [Serializer] Deprecate the XmlEncoder::TYP _CAS _ATTRIBUTES constant (@pierredup)
feature #31446 [VarDumper] Output the location of calls to dump() (@ktherage)
feature #33412 [Console] Do not leak hidden console commands (@m-vo)
feature #33676 [Security] add "anonymous: lazy" mode to firewalls (@nicolas-grekas)
feature #32440 [DomCrawler] add a normalizeWhitespace argument to text() method (@Simperfit)
feature #33148 [Intl] Excludes locale from language codes (split localized language names) (@ro0NL)
feature #31202 [FrameworkBundle] WebTestCase KernelBrowser::getContainer null return type (@Simperfit)
feature #33038 [ErrorHandler] Forward Throwable (@fancyweb)
feature #33574 [Http][DI] Replace REMOT _ADDR in trusted proxies with the current REMOT _ADDR (@mcfedr)
feature #33113 [Messenger][DX] Display real handler if handler is wrapped (@DavidBadura)
feature #33128 [FrameworkBundle] Sort tagged services (@krome162504)
feature #33658 [Yaml] fix parsing inline YAML spanning multiple lines (@xabbuh)
feature #33698 [HttpKernel] compress files generated by the profiler (@nicolas-grekas)
feature #33317 [Messenger] Added support for fro _transport attribute on messenger.messag _handler tag (@ruudk)
feature #33584 [Security] Deprecate isGranted()/decide() on more than one attribute (@wouterj)
feature #33663 [Security] Make stateful firewalls turn responses private only when needed (@nicolas-grekas)
feature #33609 [Form][SubmitType] Add "validate" option (@fancyweb)
feature #33621 Revert "feature #33507 [WebProfiler] Deprecated intercep _redirects in 4.4 (dorumd)" (@lyrixx)
feature #33605 [Twig] Add NotificationEmail (@fabpot)
feature #33623 [DependencyInjection] Allow binding iterable and tagged services (@lyrixx)
feature #33507 [WebProfiler] Deprecated intercep _redirects in 4.4 (@dorumd)
feature #33579 Adding .gitattributes to remove Tests directory from "dist" (@Nyholm)
feature #33562 [Mailer] rename SmtpEnvelope to Envelope (@xabbuh)
feature #33565 [Mailer] Rename an exception class (@fabpot)
feature #33516 [Cache] Added reserved characters constant for CacheItem (@andyexeter)
feature #33503 [SecurityBundle] Move Anonymous DI integration to new AnonymousFactory (@wouterj)
feature #33535 [WebProfilerBundle] Assign automatic colors to custom Stopwatch categories (@javiereguiluz)
feature #32565 [HttpClient] Allow enabling buffering conditionally with a Closure (@rjwebdev)
feature #32032 [DI] generate preload.php file for PHP 7.4 in cache folder (@nicolas-grekas)
feature #33117 [FrameworkBundle] Added --sort option for TranslationUpdateCommand (@k0d3r1s)
feature #32832 [Serializer] Allow multi-dimenstion object array in AbstractObjectNormalizer (@alediator)
feature #33189 New welcome page on startup for 4.4 LTS & 5.0 (@yceruto)
feature #33295 [OptionsResolver] Display full nested option hierarchy in exceptions (@fancyweb)
feature #33486 [VarDumper] Display fully qualified title (@pavinthan, @nicolas-grekas)
feature #33496 Deprecated not passing dash symbol (-) to STDIN commands (@yceruto)
feature #32742 [Console] Added support for definition list and horizontal table (@lyrixx)
feature #33494 [Mailer] Change DSN syntax (@fabpot)
feature #33471 [Mailer] Check email validity before opening an SMTP connection (@fabpot)
feature #31177 #21571 Comparing roles to detected that users has changed (@oleg-andreyev)
feature #33459 [Validator] Deprecated CacheInterface in favor of PSR-6 (@derrabus)
feature #33271 Added new ErrorController + Preview and enabling there the error renderer mechanism (@yceruto)
feature #33454 [Mailer] Improve an exception when trying to send a RawMessage without an Envelope (@fabpot)
feature #33327 [ErrorHandler] Registering basic exception handler for late failures (@yceruto)
feature #33446 [TwigBridge] lint all templates from configured Twig paths if no argument was provided (@yceruto)
feature #33409 [Mailer] Add support for multiple mailers (@fabpot)
feature #33424 [Mailer] Change the DSN semantics (@fabpot)
feature #33319 Allow configuring class names through methods instead of class parameters in Doctrine extensions (@alcaeus)
feature #33283 [ErrorHandler] make DebugClassLoader able to add return type declarations (@nicolas-grekas)
feature #33323 [TwigBridge] Throw an exception when one uses email as a context variable in a TemplatedEmail (@fabpot)
feature #33308 [SecurityGuard] Deprecate returning non-boolean values from checkCredentials() (@derrabus)
feature #33217 [FrameworkBundle][DX] Improving the redirect config when using RedirectController (@yceruto)
feature #33015 [HttpClient] Added TraceableHttpClient and WebProfiler panel (@jeremyFreeAgent)
feature #33091 [Mime] Add Address::fromString (@gisostallenberg)
feature #33144 [DomCrawler] Added Crawler::matches(), ::closest(), ::outerHtml() (@lyrixx)
feature #33152 Mark all dispatched event classes as final (@Tobion)
feature #33258 [HttpKernel] deprecate global dir to load resources from (@Tobion)
feature #33272 [Translation] deprecate support for null locales (@xabbuh)
feature #33269 [TwigBridge] Mark all classes extending twig as @final (@fabpot)
feature #33270 [Mime] Remove NamedAddress (@fabpot)
feature #33169 [HttpFoundation] Precalculate session expiry timestamp (@azjezz)
feature #33237 [Mailer] Remove the auth mode DSN option and support in the eSMTP transport (@fabpot)
feature #33233 [Mailer] Simplify the way TLS/SSL/STARTTLS work (@fabpot)
feature #32360 [Monolog] Added ElasticsearchLogstashHandler (@lyrixx)
feature #32489 [Messenger] Allow exchange type headers binding (@CedrickOka)
feature #32783 [Messenger] InMemoryTransport handle acknowledged and rejected messages (@tienvx)
feature #33155 [ErrorHandler] Added call() method utility to turns any PHP error into ErrorException (@yceruto)
feature #33203 [Mailer] Add support for the queued flag in the EmailCount assertion (@fabpot)
feature #30323 [ErrorHandler] trigger deprecation in DebugClassLoader when child class misses a return type (@fancyweb, @nicolas-grekas)
feature #33137 [DI] deprecate support for non-object services (@nicolas-grekas)
feature #32845 [HttpKernel][FrameworkBundle] Add alternative convention for bundle directories (@yceruto)
feature #32548 [Translation] XliffLintCommand: allow .xliff file extension (@codegain)
feature #28363 [Serializer] Encode empty objects as objects, not arrays (@mcfedr)
feature #33122 [WebLink] implement PSR-13 directly (@nicolas-grekas)
feature #33078 Add compatibility trait for PHPUnit constraint classes (@alcaeus)
feature #32988 [Intl] Support ISO 3166-1 Alpha-3 country codes (@terjebraten-certua)
feature #32598 [FrameworkBundle][Routing] Private service route loaders (@fancyweb)
feature #32486 [DoctrineBridge] Invokable event listeners (@fancyweb)
feature #31083 [Validator] Allow objects implementing toString() to be used as violation messages (@mdlutz24)
feature #32122 [HttpFoundation] deprecate HeaderBag::get() returning an array and add all($key) instead (@Simperfit)
feature #32807 [HttpClient] add "ma _duration" option (@fancyweb)
feature #31546 [Dotenv] Use default value when referenced variable is not set (@j92)
feature #32930 [Mailer][Mime] Add PHPUnit constraints and assertions for the Mailer (@fabpot)
feature #32912 [Mailer] Add support for the profiler (@fabpot)
feature #32940 [PhpUnitBridge] Add polyfill for PhpUnit namespace (@jderusse)
feature #31843 [Security] add support for opportunistic password migrations (@nicolas-grekas)
feature #32824 [Ldap] Add security LdapUser and provider (@chalasr)
feature #32922 [PhpUnitBridge] make the bridge act as a polyfill for newest PHPUnit features (@nicolas-grekas)
feature #32927 [Mailer] Add message events logger (@fabpot)
feature #32916 [Mailer] Add a name to the transports (@fabpot)
feature #32917 [Mime] Add AbstractPart::asDebugString() (@fabpot)
feature #32543 [FrameworkBundle] add config translator cach _dir (@Raulnet)
feature #32669 [Yaml] Add flag to dump NULL as (@OskarStark)
feature #32896 [Mailer] added debug info to TransportExceptionInterface (@fabpot)
feature #32817 [DoctrineBridge] Deprecate RegistryInterface (@Koc)
feature #32504 [ErrorRenderer] Add DebugCommand for easy debugging and testing (@yceruto)
feature #32581 [DI] Allow dumping the container in one file instead of many files (@nicolas-grekas)
feature #32762 [Form][DX] derive default timezone from referenc _date option when possible (@yceruto)
feature #32745 [Messenger][Profiler] Attempt to give more useful source info when using HandleTrait (@ogizanagi)
feature #32680 [Messenger][Profiler] Collect the stamps at the end of dispatch (@ogizanagi)
feature #32683 [VarDumper] added support for Imagine/Image (@lyrixx)
feature #32749 [Mailer] Make transport factory test case public (@Koc)
feature #32718 [Form] use a reference date to handle times during DST (@xabbuh)
feature #32637 [ErrorHandler] Decouple from ErrorRenderer component (@yceruto)
feature #32609 [Mailer][DX][RFC] Rename mailer bridge transport classes (@Koc)
feature #32587 [Form][Validator] Generate accept attribute with file constraint and mime types option (@Coosos)
feature #32658 [Form] repeat preferred choices in list of all choices (@Seb33300, @xabbuh)
feature #32698 [WebProfilerBundle] mark all classes as internal (@Tobion)
feature #32695 [WebProfilerBundle] Decoupling TwigBundle and using the new ErrorRenderer mechanism (@yceruto)
feature #31398 [TwigBundle] Deprecating error templates for non-html formats and using ErrorRenderer as fallback (@yceruto)
feature #32582 [Routing] Deprecate ServiceRouterLoader and ObjectRouteLoader in favor of ContainerLoader and ObjectLoader (@fancyweb)
feature #32661 [ErrorRenderer] Improving the exception page provided by HtmlErrorRenderer (@yceruto)
feature #32332 [DI] Move non removing compiler passes to after removing passes (@alexpott)
feature #32475 [Process] Deprecate Process::inheritEnvironmentVariables() (@ogizanagi)
feature #32583 [Mailer] Logger vs debug mailer (@fabpot)
feature #32471 Add a new ErrorHandler component (mirror of the Debug component) (@yceruto)
feature #32463 [VarDumper] Allow to configure VarDumperTestTrait casters & flags (@ogizanagi)
feature #31946 [Mailer] Extract transport factory and allow create custom transports (@Koc)
feature #31194 [PropertyAccess] Improve errors when trying to find a writable property (@pierredup)
feature #32435 [Validator] Add a new constraint message when there is both min and max (@Lctrs)
feature #32470 Rename ErrorCatcher to ErrorRenderer (rendering part only) (@yceruto)
feature #32462 [WebProfilerBundle] Deprecating templateExists method (@yceruto)
feature #32446 [Lock] rename and deprecate Factory into LockFactory (@Simperfit)
feature #31975 Dynamic bundle assets (@garak)
feature #32429 [VarDumper] Let browsers trigger their own search on double CMD/CTRL + F (@ogizanagi)
feature #32198 [Lock] Split "StoreInterface" into multiple interfaces with less responsability (@Simperfit)
feature #31511 [Validator] Allow to use property paths to get limits in range constraint (@Lctrs)
feature #32424 [Console] don't redraw progress bar more than every 100ms by default (@nicolas-grekas)
feature #32418 [Console] Added Application::reset() (@lyrixx)
feature #31217 [WebserverBundle] Deprecate the bundle in favor of symfony local server (@Simperfit)
feature #31554 [SECURITY] AbstractAuthenticationListener.php error instead info. Rebase of #28462 (@berezuev)
feature #32284 [Cache] Add argument $prefix to AdapterInterface::clear() (@nicolas-grekas)
feature #32423 [ServerBundle] Display all logs by default (@lyrixx)
feature #26339 [Console] Add ProgressBar::preventRedrawFasterThan() and forceRedrawSlowerThan() methods (@ostrolucky)
feature #31269 [Translator] Dump native plural formats to po files (@Stadly)
feature #31560 [Ldap][Security] LdapBindAuthenticationProvider does not bind before search query (@Simperfit)
feature #31626 [Console] allow answer to be trimmed by adding a flag (@Simperfit)
feature #31876 [WebProfilerBundle] Add clear button to ajax tab (@Matts)
feature #32415 [Translation] deprecate passing a null locale (@Simperfit)
feature #32290 [HttpClient] Add $response->toStream() to cast responses to regular PHP streams (@nicolas-grekas)
feature #32402 [Intl] Exclude root language (@ro0NL)
feature #32295 [FrameworkBundle] Add autowiring alias for PSR-14 (@nicolas-grekas)
feature #32390 [DependencyInjection] Deprecated passing Parameter instances as class name to Definition (@derrabus)
feature #32106 [FrameworkBundle] Use defaul _locale as default value for translator.fallbacks (@dunglas)
feature #32294 [FrameworkBundle] Allow creating chained cache pools by providing several adapters (@nicolas-grekas)
feature #32207 [FrameworkBundle] Allow to use the BrowserKit assertions with Panther and API Platform's test client (@dunglas)
feature #32344 [HttpFoundation][HttpKernel] Improving the request/response format autodetection (@yceruto)
feature #32231 [HttpClient] Add support for NTLM authentication (@nicolas-grekas)
feature #32265 [Validator] deprecate non-string constraint violation codes (@xabbuh)
feature #31528 [Validator] Add a Length::$allowEmptyString option to reject empty strings (@ogizanagi)
feature #32081 [WIP][Mailer] Overwrite envelope sender and recipients from config (@Devristo)
feature #32255 [HttpFoundation] Drop support for ApacheRequest (@lyrixx)
feature #31825 [Messenger] Added support for auto trimming of redis streams (@Toflar)
feature #32277 Remove @experimental annotations (@fabpot)
feature #30981 [Mime] S/MIME Support (@sstok)
feature #32180 [Lock] add an InvalidTTLException to be more accurate (@Simperfit)
feature #32241 [PropertyAccess] Deprecate null as allowed value for defaultLifetime argument in createCache method (@jschaedl)
feature #32221 [ErrorCatcher] Make IDEs and static analysis tools happy (@fabpot)
feature #32227 Rename the ErrorHandler component to ErrorCatcher (@fabpot)
feature #31065 Add ErrorHandler component (@yceruto)
feature #32126 [Process] Allow writing portable "prepared" command lines (@Simperfit)
feature #31532 [Ldap] Add users extraFields in ldap component (@Simperfit)
feature #32104 Add autowiring for HTTPlug (@nicolas-grekas)
feature #32130 [Form] deprecate int/float for string input in NumberType (@xabbuh)
feature #31547 [Ldap] Add exception for mapping ldap errors (@Simperfit)
feature #31764 [FrameworkBundle] add attribute stamps (@walidboughdiri)
feature #32059 [PhpUnitBridge] Bump PHPUnit 7+8 (@ro0NL)
feature #32041 [Validator] Deprecate unused arg in ExpressionValidator (@ogizanagi)
feature #31287 [Config] Introduce find method in ArrayNodeDefinition to ease configuration tree manipulation (@jschaedl)
feature #31959 [DomCrawler][Feature][DX] Add Form::getName() method (@JustBlackBird)
feature #32026 [VarDumper] caster for HttpClient's response dumps all info (@nicolas-grekas)
feature #31976 [HttpClient] add HttplugClient for compat with libs that need httplug v1 or v2 (@nicolas-grekas)
feature #31956 [Mailer] Changed EventDispatcherInterface dependency from Component to Contracts (@Koc)
feature #31980 [HttpClient] make Psr18Client implement relevant PSR-17 factories (@nicolas-grekas)
feature #31919 [WebProfilerBundle] Select default theme based on user preferences (@javiereguiluz)
feature #31451 [FrameworkBundle] Allow dots in translation domains (@jschaedl)
feature #31321 [DI] deprecates tag !tagged in favor of !tagge _iterator (@jschaedl)
feature #31658 [HTTP Foundation] Deprecate passing argument to method Request::isMethodSafe() (@dFayet)
feature #31597 [Security] add MigratingPasswordEncoder (@nicolas-grekas)
feature #31351 [Validator] Improve TypeValidator to handle array of types (@jschaedl)
feature #31526 [Validator] Add compared value path to violation parameters (@ogizanagi)
feature #31514 Add exception as HTML comment to beginning and end of exceptio _full.html.twig (@ruudk)
feature #31739 [FrameworkBundle] Add missing BC layer for deprecated ControllerNameParser injections (@chalasr)
feature #31831 [HttpClient] add $response->cancel() (@nicolas-grekas)
feature #31334 [Messenger] Add clear Entity Manager middleware (@Koc)
feature #31594 [Security] add PasswordEncoderInterface::needsRehash() (@nicolas-grekas)
feature #31821 [FrameworkBundle][TwigBundle] Add missing deprecations for PHP templating layer (@yceruto)
feature #31509 [Monolog] Setup the LoggerProcessor after all other processor (@lyrixx)
feature #31785 [Messenger] Deprecate passing a bus locator to ConsumeMessagesCommand's constructor (@chalasr)
feature #31700 [MonologBridge] RouteProcessor class is now final to ease the the removal of deprecated event (@Simperfit)
feature #31732 [HttpKernel] Make DebugHandlersListener internal (@chalasr)
feature #31539 [HttpKernel] Add lts config (@noniagriconomie)
feature #31437 [Cache] Add Redis Sentinel support (@StephenClouse)
feature #31543 [DI] deprecate short callables in yaml (@nicolas-grekas)

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Published in #Releases

Symfony 4.4.0-BETA1 released

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