Former WWE and World Heavyweight Champion Dave Batista addressed a possible WWE return on his Twitter feed.  He answered a post where it was said he was being cryptic with the following:

Here's a cryptic message:  I'm focused on movies now.  No #MMA anytime soon.  No #WWE plans either but not opposed.  Hopefully #MyFansSupportMe.

So, wrestling being what it is, that means we'll see him soon?  Big Dave seemed legitimately irritated with the blog post so it's hard to say what the story is here.  Only time will tell.