It's confirmed. Lady Gaga will be appearing this season on an episode of Fox's Glee. Producer Ryan Murphy just confirmed that Gaga accepted the offer, although there is no word what kind of a role she will be playing exactly.
Gaga is the latest major star to sign on for a cameo this season, following the suit of Jennifer Lopez, Olivia Newton-John, Neil Patrick Harris and Josh Groban. There will also be an all-Madonna episode to come, which will have Sue Sylvester (Jane Lynch) performing Vogue. This of course has already been publicized widely.