James Ivory says Richard II with Tom will happen, eventually:

Are you still hoping to make Richard II with Tom Hiddleston?

I am. That’s moving along. Tom has become a very popular actor and he has all sorts of things that he wants to do so it’s when he can do it which hopefully won’t be too long from now. But he’s keen and is going to do it. The other starring role will be Bolingbroke played by Damian Lewis.

http://heatst.com/world/james-ivory-on-howards-end-not-being-able-to-work-with-shia-labeouf-and-tom-hiddleston/