Play 2.0 is out. But it's got a curfew.
According to the movie trailers, "Play 2.0 is still under heavy development and APIs are likely to change, but you can already have a look and download the preview version."
Of course, this does beg the question: "do we really need another Java web development framework?" If anything, more and more enterprise development shops are moving away from the world of bloated frameworks, and going back to basics, with simple Servlet and JSP applications that leverage the latest JavaScript libraries like JQuery and DOJO to do the cool stuff up front, and connect to simple, RESTful web services on the back end to do the hard stuff. There's something to be said for keeping it simple.
But having said that, Play keeps gaining traction in the industry. Over the past couple of years, we're seeing more and more people talking about Play and Vaadin in our surveys. Clearly the community hasn't hit the saturation point.
So, if you're up for learning another framework, check out Play. Lots of smart and handsome people seem to be adopting it.
http://www.playframework.org/2.0#faq