Symfony 3.4 provides new configuration options so you can generate the right URL for assets out of the HTTP context, for example in a command console.
Symfony 3.4 deprecates bundle inheritance, but Symfony still provides lots of alternatives to override the resources of third-party bundles in your application.
Symfony 3.4 adds a new CoverageListener to the PHPUnit Bridge component to create more precise code coverage reports.
Symfony 3.4 introduces a new (optional) PHP-based configuration format to define routes and services using a fluent interface.
The "feature freeze" period for Symfony 3.4 and 4.0 start at the end of this week and you can help us bringing more new features to them.
Symfony 3.4 allows to define the data type of the value stored in environment variables and also defines some operators to transform their values before using them.
In Symfony 3.4, comparison constraints can get the value of any other property without having to define a full expression.
In Symfony 3.4, the MicroKernel trait can subscribe to events and handle them using methods defined in the kernel class.
In Symfony 3.4, configuration options can be deprecated more easily to warn users about future changes.
Symfony 3.4 will include support for HTTP Immutable Responses thanks to the new immutable option of the Cache-Control directive.
Symfony 3.4 adds support for validation groups in the Valid constraint, so you can partially validate the embedded objects.
Symfony 3.4 improves the exceptions displayed in the console to include by default the exact file and line number where the exception occurred.
Symfony 3.4 improves the user impersonation feature of the Symfony component to make it easier to debug.
Symfony components surpassed 1 billion downloads on September 5th 2017.
In Symfony 3.4, security listeners are lazy loaded to improve performance. In addition, the Symfony Profiler has been updated to show all the information about security listeners.
Symfony 3.4 adds support for XLIFF 2.0 notes, which allow to store end user comments and annotations about translations.
In Symfony 3.4, the @Route annotation can define a prefix for the names of all the routes defined in the same controller class.