Erlang/OTP 20.0, Elixir 1.5 and Phoenix framework 1.3 were all released in a timespan of 2 months or so - huge improvements to the already great ecosystem.
The Phoenix team was waiting for Elixir 1.5 to release the new version of the framework (or at least one of the devs said as much in a talk I watched a while ago).
Erlang/OTP 20 came out June 21[0], so about 5 weeks ago.
Makes sense though, Eliir 1.5 was waiting for final release of OTP, and Phoenix was waiting on final release of Elixir, but they'd all had very stable preview releases for a while, so it wasn't a ton of work left on any of them, just finalizing and testing I imagine. I'm super excited to get my side project[1] upgraded to 1.5 and see the new dev conveniences!
