
Contributed by Nicolas Grekas in #38465 and #40513.
Symfony 5.3 was released on May 31, 2021. Although we’ve published many articles about new Symfony 5.3 features, there are some interesting new features that we haven’t discussed yet. The first one is the new Runtime Component. The purpose of the Runtime component is to abstract most of the application bootstrapping logic

Symfony 5.2.10 has just been released. Here is a list of the most important changes:
bug #41000 [Form] Use !isset for checks cause this doesn’t falsely include 0 (@Kai Dederichs) bug #41407 [DependencyInjection] keep container.servic _subscriber tag on the decorated definition (@xabbuh) bug #40866 [Filesystem] fix readlink() for Windows (@a1812) bug #41394 [Form] fix support for years outside of the 32b range on x86 arch (@nicolas-grekas) bug #41380 Make Mailgun Header compatibl

Symfony 4.4.25 has just been released. Here is a list of the most important changes:
bug #41000 [Form] Use !isset for checks cause this doesn’t falsely include 0 (@Kai Dederichs) bug #41407 [DependencyInjection] keep container.servic _subscriber tag on the decorated definition (@xabbuh) bug #40866 [Filesystem] fix readlink() for Windows (@a1812) bug #41394 [Form] fix support for years outside of the 32b range on x86 arch (@nicolas-grekas) bug #39847 [Messenger] Fix merging Proto

Symfony 5.3.0 has just been released. Here is a list of the most important changes:
bug #41458 [FrameworkBundle] fix ConfigBuilderCacheWarmer (@nicolas-grekas) bug #41456 [FrameworkBundle] fix creating ContainerBuilder at warmup/CLI time (@nicolas-grekas) bug #41452 [FrameworkBundle] Remove redundant cache service (@derrabus) bug #41451 [Translation] Remove PoEditor Provider (@welcoMattic) bug #41000 [Form] Use !isset for checks cause this doesn’t falsely include 0 (@Kai Ded

Symfony 5.3.0 has just been released. As for any other Symfony minor release, our backward compatibility promise applies and this means that you should be able to upgrade easily without changing anything in your code.
During the last couple of months, we've blogged about the great 5.3 new features. I highly recommend you to read these articles about Symfony 5.3 as they contain the major changes for this new version:
Config Builder Classes: Symfony 5.3 automatically generates config builder cl

This week, Symfony 5.3 made the last tweaks and fixes before its final release. Meanwhile, the upcoming Symfony 6.0 version started working on removing legacy code and adding PHP types across the entire codebase. Lastly, Symfony announced a new SymfonyWorld Online Winter Edition conference (December 9-10) which will complement the imminent SymfonyWorld Online Summer Edition on June 17-18.
Symfony development highlights
This week, 71 pull requests were merged (55 in code and 16 in docs) and 24

Are you ready to join us next month at the international SymfonyWorld Online 2021 Summer Edition online conference? The entire event, workshops and conference will be organized online in English. All talks will have English subtitles and will be available in replay as soon as the conference ends. Join us for an entire week of Symfony:
2-day online pre-conference workshops on June 15-16 2-day online conference with 2 tracks per day on June 17-18
We're pleased to announce the last Keyn

Unfortunately, we sadly announced the cancellation of SymfonyCon Disneyland Paris 2021. As we are really eager to meet with the wonderful Symfony community later this year again, we are thus very pleased to announce the 3rd edition of the SymfonyWorld online conference on December 9-10 2021, we'll celebrate the release of Symfony 6!
We really want to meet with the Symfony community in real life events but as the sanitary situation is still too uncertain, we decided to meet again online

Unfortunately, after postponing the organization of SymfonyCon Disneyland Paris 2020 to 2021, we are very sorry to announce that we are canceling the international Symfony conference scheduled next December 2-3rd 2021.
As the entire world is still not yet recovering from the COVID-19 situation and some countries are still strongly facing this pandemic due to the rising of COVID variants from all over the world, we unfortunately took this time the very hard decision to cancel SymfonyCon Disneyla

This week, Symfony 3.4.49, 4.4.24 and 5.2.9 maintenance versions were released. In addition, the first Release Candidate of Symfony 5.3.0 was published in preparation for its final release at the end of this month. Lastly, the SymfonyWorld 2021 conference (June 17-18) announced more keynotes and more talks.
Symfony development highlights
This week, 83 pull requests were merged (52 in code and 31 in docs) and 51 issues were closed (37 in code and 14 in docs). See details for code and docs.
4.4