During a recent Simpsons panel discussion at Comic-Con, showrunner Al Jean announced that the cast of Glee will appear during an upcoming episode of the show. The exact cast members who’ll be involved - including cheer coach Sue Sylvester (Jane Lynch) - have not yet been announced.

The upcoming season of The Simpsons will feature a number of notables such as Facebook creator Mark Zuckerberg and ‘60s icons Cheech and Chong.

Comic-Con visitors at the Simpsons session also viewed a preview of October’s “Treehouse of Horror” episode, which features killer board games.

The Simpsons is America’s longest-running sitcom and the country’s longest-running animated program. The historic 22nd season will air Sunday nights on FOX.