I'm not sure how I feel about the new timeslot. They could have moved it because Friday night is such a low-rated night. That wouldn't be good. On the other hand, it will be coming at the end of November sweeps, so there could be a lot of promotion leading up to it. It'll also be the day after the Thanksgiving parade, so people should remember if the NBC announcers mention as the Kermit balloon goes by that the movie is airing the very next night!
For those who are worried that Friday night is a death timeslot for the Muppets, keep in mind that while JHH and MT started on Fridays, they moved to Sundays to finally die. So being on Sundays isn't necessarily the best place for them either. It could be that they changed the night because of something Disney planned to air on ABC that night. Maybe the Muppets need a night with relatively low competition right now. (I am worried, though, about the Brady movie appealing to the same crowd.)
And for those who are still concerned about Nov. 29 being too early in the season, remember that most studios roll out their Christmas videos at the beginning of November. VeggieTales Christmas and Beauty and the Beast: An Enchanted Christmas are both available now and have been heavily advertised. Heck, MCC was originally released on video on Oct. 8! This is a fairly common practice, so it can't be hurting sales.
Anyway, we'll see what happens, I guess. Everyone mark your calendars!