If they're not padding the numbers on subs - and I fully believe they are - I can't imagine that Actiblizz will allow Titan to remain under wraps any longer than this year. Come E3 I think we'll see real info on it. Regardless, what may have been interesting about it years ago is now so much old schlock given Actiblizz's current model of doing business. I sincrely doubt them seeing a repeat of WoW's success given everything out there and how bad they've screwed the pooch on D3, etc. And yes, they did a ton of sales on the Diablo name alone, but now knowing what ever the most casual gamer knows it will not live up to their expectations.
“There is no such thing as a weird human being. It’s just that some people require more understanding than others.” - Tom Robbins