You could try asking Henson i guess but you won't get a straight answer there yet. It's all speculation - although you could call it 'informed speculation' but i don't think anything is definite yet, everything depends on the sale, who buys and how the Henson's feel about them and vice versa. You have to remember that Brian Henson stepped down from his management position at JHC a while back for two reasons - firstly to concentrate on his other projects (which with Farscape being axed and indie producers being used for the Fox show is pretty much non existant other than Hallmark movies), and secondly unofficially it was likely to ease the transition for whoever takes over at JHC because it's going to be ten times harder for them to run the company how they want with Henson family members around. Rivkin will likely move down or out once the new owners move in and Henson family involvement is at an all time low right now - i think it would be incredibly embarrassing for Brian to be a mere puppeteer on the set of the new Muppet Show where the people in charge will not be longterm Henson people - he's used to being the boss and it's just not the done thing in the TV world. Maybe i'm wrong, maybe puppet show sets are different, maybe they'll all see it different and Brian has this new career planned as a puppeteer, maybe he'll just get paid to loop the voices. Who knows ? I wouldn't actually assume that the Xmas movie is leading the way into the Fox show and the characters and style you saw will all be the same in the TV show - the Xmas movie was put together by the same people who've run and worked at Henson for ages - the sale and new production team for the TV show will mean things are completely different and strategy could change at any time, including what characters, writers and puppeteers they use ..... the TV show was officially announced but even there things can and will change, we just gotta wait and see.