I haven't watched the brand new one yet. (They did show a preview clip from it back in August when they had the "Big Fan Weekend" marathon.)
Leads me to a question: Over the last few months I've been trying to collect the various Regular Shows (I bought the Seasons 1 and 2 DVD set). I have noticed that for the longer "special" ones, like the Christmas one, the Halloween ones and last year's season premiere ("Exit 9B"), they don't seem to be repeating those in rotation with the rest. Well, I just picked up the three Halloween ones, and I'm guessing the Christmas one might show up around the holidays, but how about "Exit 9B," where the park gets destroyed? I missed it first time around, am I out of luck?
Of course, once I get them all, that's when the rest of them will come out on BluRay!