It's a foregone conclusion Paramount will put one out in 2016 for the big Five-Oh. With Ep7 likely hitting in May of 2015, Abrams could conceivably come back to direct Trek 3 in time for a November/December 2016 release.
Oh, and Chewie's dead. Mayhew got his chance to come back in ROTS.
Like I've said again and again regarding all the post-Jedi continuity: it's one thing to ignore, but it's another thing to pretend it never happened.