So W&G just ended. We've got TMI right now.
We've also got CSI: Deadly Intent.
Now, do you think we're going to hear about another series soon that'll be releasing alongside MI or do you think MI will be "monopolizing" attention - not that I'd be complaining - for the next five months, with Deadly Intent being released in Fall as our "alternative" series? S&M is in pre-production still, so I don't expect that.
If I had to make a bet a season two of SBCG4AP would be the next entry. All the characters in the whole series have already been modeled and all the areas. It seems like it would be EXCEPTIONALLY recyclable without feeling cheap.
Or something totally random and new like Telltale likes to seem to do - surprise us randomly.