At least it's good to know that they still try to work in Kermit the Frog on Sesame Street specials whenever they can, which is cool with me because he'll always be part of Sesame Street as far as I'm concerned. He does show up briefly in Follow That Bird (and he has a good joke too) and on Elmo Saves Christmas and CinderElmo, and The Street We Live On (in archive footage).
And of course, on the Sesame Street 20 years and Still Counting special. But I think I'll always love his role on Christmas Eve on Sesame Street best. That is by far one of the best Christmas specials of any of them. (Muppet or otherwise!)