Symfony Blog
New in Symfony 4.1: Dynamic lock refresh
In Symfony 4.1, locks can be refreshed for a different amount of time than the original TTL used when creating the lock.
A week of symfony #583 (26 February - 4 March 2018)
This week, Symfony 2.7.42, 2.8.35, 3.4.5 and 4.0.5 maintenance versions were published. In addition, Symfony improved the accessibility of the Bootstrap 4 form theme to comply with the WCAG standard: it fixed some HTML issues, added new attributes and improved how form errors are displayed. Finally, it was proposed a way to simplify the User and UserChecker.
New in Symfony 4.1: Deprecated the AdvancedUserInterface
In Symfony 4.1 the AdvancedUserInterface has been deprecated, but you can define your own "user checkers" to get the same functionality.