Tina Fey and Liz Lemon are back! (Almost!) (Andy Kropa/Getty Images)

The first promo for the NBC comedy’s sixth season, premiering Jan. 12, teases that Liz Lemon (Tina Fey ) is about “to drop a bombshell”: she’s singing merrily, booty shaking at a basketball game and driving everyone crazy with her secret.

My first guess was that the at times baby crazy/stealing Lemon is expecting. But there’s also a shot of her holding what appears to be alcohol while scowling. (The scowling has nothing to do with my pregnancy speculation.) So who knows!

Kelsey Grammer also returns to the show, presumably to help Jenna investigate Lemon’s secret. (Grammer, appearing as himself, previously helped Jenna and Kenneth with a scheme to steal money from an ice cream cake joint.)

Watch the promo below, and share your thoughts in the comment.