@airjamy already beat you to the punch.... http://www.lustria-online.com/threads/old-world-revamp.23867/
The thing is: it might not be coming back. They didn't say anything like that. Right now everyone is speculating what it might be. We actually know two things: - square bases - old world We have no clue what kind of game it will be.
@Aginor is completely correct, but that doesn't stop me from spamming my new favourite meme... I think what we can infer, is that it is going to be something fairly big. 3-4 years is a huge lead up time.