I started the play-cdi project just for fun lately and actually it's more a proof of concept than a real project.
Right now you can inject your CDI beans in Controllers, Jobs and Mailers. The request scope is supported out of the box, the other web scopes (session, conversation) are not supported for obvious reasons.
There are still some rough edges with the current code, I'm facing issues with scoped beans used in views, with slf4j dependencies, etc ...
If anyone has ideas and wants to contribute to the project, I'll be happy to welcome them.