On the Symfony project blog they've posted an announcement about the opening of the SymfonyLive Berlin 2018 Call for Papers.

Berlin will see its next SymfonyLive from October 24th to 26th! This year, we are moving to a new, but familiar, venue: the Mercure MOA, where the international SymfonyCon 2016 took place.

As usual for the Berlin edition, we will have two days of workshops, and a single day conference with two tracks full of talks about Symfony and related technologies.

The call for papers is open and will end July 31st. They're looking for a wide range of topics including developer workflows, modern Javascript and, of course, Symfony features. The post also talks about what kind of speakers they're looking for and about the workshop schedule.