His exact part is a matter of discussion, but in recent days there's been chatter in Hollywood development circles of a few possibilities: He could play a new single-monikered government agent, with Tommy Lee Jones' Agent K passing the baton to Brolin's character. Or he could play Agent K as a young man. Or something else entirely.
Will Smith is set to return for the third installment, written by Etan Cohen. No word on whether Tommy Lee Jones is reprising his role. Barry Sonnenfeld is tentatively coming back to direct Men in Black 3, which could shoot at least partly in New York.
No production date has been set.