It's Blizzard, if this thing is actually materialized in any form outside of planning I'd be amazed. They don't outsource, they don't split focus and they're always hiring for basically every position possible even if it's just research for the future, so looking at their job applications is never as useful as people seem to think it is.
I'm still guessing if it's real, it wont be here until the very end of 2013, minimum, considering the work they'd need to do with the infrastructure and some hefty retuning just to get the back end of the game playable on a pad and they probably aren't going to divert currently swamped staff away for it. I wouldn't be shocked to see Titan before Diablo III console if push came to shove. :lol
Could be totally wrong, and that'd be cool to see them proactive about it, but Blizzard is usually a really easy to predict developer who is pretty transparent with the way they work. It'll be curious to see if anything about this pops up anytime soon, possibly during E3.