There's no doubt we'll have a follow up movie. The Muppets was very low budget, and I'm wondering exactly how much of that budget was rebuilding certain Muppets. Considering how bad the investment in John Carter was (due to their clumsy handling of the marketing), I'd tend to think they'd gravitate towards making another Muppet film. 50 Million is an easy investment to make back. As long as that other movie in that article doesn't get in the way.