As unlikely as it may seem, that "Men in Black"/"21 Jump Street" crossover is really happening. How do we know? Because Sony Pictures announced its tentative title Tuesday at CinemaCon in Las Vegas. And it's perfect.

Are you ready? It's called "MIB 23," which not only combines the names of the two franchises but takes a playful jab at Hollywood's obsession with sequels.

James Bobin will step behind the camera for the crossover, replacing "Jump Street" directors Phil Lord and Chris Miller, who have their hands full with the "Star Wars" Han Solo spinoff, among other projects (they will, however, stick around as producers).

Jonah Hill and Channing Tatum will reprise their "Jump Street" roles as Jenko and Schmidt, but Will Smith and Tommy Lee Jones aren't expected to don the black suits and shades again.