I cannot believe this is actually happening. Sure, it's ten years after the show peaked, but c'mon. Imagine if they were able to get all the amazing talent who helped make this show brilliant over the years and come up with a decent flick?! Conan O'Brien, Brad Bird, the list is endless!
Anyway, the only "plot point" the rumor mill is offering at this point is:
"All of the original cast, and writers, are involved. The main plot is that a goof by Homer at the power plant results in the government putting a dome over the city limits of Springfield."
But the teaser trailer is all over the internet. So enjoy!