Charter Arms is a pretty small company (I think they employ about two dozen people). I really don't think they'll take the gamble of designing and producing a .380 revolver from the ground up.
I do wish the .32 family would see more of a comeback in smaller revolvers. A five (heck even four!) shot .327 magnum would be some good medicine in a small package.
"And I'm tellin' you son, well it ain't no fun, staring straight down a .44"