Rejoice, 30 Rock fans: Matt Damon is returning to the sitcom.

Now, shed a few tears, 30 Rock fans: the actor won't be around for long.

In an interview with Entertainment Weekly, Tina Fey teased the return of her sitcom, which will come back with new episodes in a later time slot (10 p.m.) on Thursay, January 20.

Fey says the switch is "kind of exciting,” as the staff has "been wondering: Can we do even weirder things?”

Among specific spoilers Fey revealed, she said Damon will definitely be back as Liz's boyfriend, Carol. However:

“We are going to break up. It had to happen because he has to go make movies.”

Also, fans can look forward to a focus on Angie’s reality show, Queen of Jordan. A major focus, perhaps. Says Fey: “We’re hoping to, maybe, if we can get away with it, do an entire episode that’s just an episode of Queen of Jordan."

We'd say that qualifies as a weirder thing.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.