Symfony Flex is replacing its proprietary server by a public server powered by GitHub Actions. This will allow you to use custom recipes and to build custom features on top of the Flex API.
The upcoming Symfony 5.4 and 6.0 versions add PHP types in all their properties, arguments and return values. This will require some changes in your applications and bundles/packages.
SymfonyWorld Online 2021 Winter Edition will be held on December 9-10 2021. Hurry up to submit your talk or workshop proposals as the Call for Papers is closing by September 20th.