I don't know. I loved Play Framework 1. Simple, lean, and lightning fast development. Play 2 came out and it looked strange, with various Scala things mixed in. It's a lot more complicate and bloated, and more buggy. The core piece is in Scala. The build is now sbt, yet another different thing to maintain. The template is Scala, slow to develop and slow to compile. The much-touted async feature is a meh. Most web apps don't have a high scalable requirement that async would help. If I really need high performance async support, I would go with Vert.x.

Play 1 was almost perfect. Really hope someone would fork Play 1 and continue with it.