I was checking the forums today over at the official Zen studios site and I noticed one of the forum reps giving out possible release dates for the new Marvel pinball tables. Solitudes information has always been pretty solid before and I doubt this information will be any different. According to Solitude the Marvel tables could drop in April or May while the Mars and Paranormal tables From Zen Pinball could be filling in the gap with releases in February and March. 
Nothing set in stone of course but this is the first time they are really talking about dates and i for one am still excited for what this game has to offer, if you want to read the thread yourself  here is the link.