Well, wherever Ron goes, so goes younger brother and oddball cult actor Clint Howard. Many of Ron Howard's films feature small roles for his brother, going all the way back to Ron's 1977 feature-film debut Grand Theft Auto. (I know what you're thinking, and no, no relation to that Grand Theft Auto.)
Over on Twitter, Ron Howard seemed to confirm that Clint will have a some sort of on-screen appearance in the film.
Be interesting to see what sort of movie this winds up being. It'll probably be a messy bit of space junk, sort of like the Millennium Falcon, which I always assumed was the space equivalent of a crummy big rig truck.
May not be pretty, bucko, but you're here now, ain't ya? C'mon. I'll buy ya a sloppy joe.