In an interview with Cool Toy Review, Sideshow Collectibles' Brant Bridges reveals that the design team at Sideshow is putting the finishing touches on a 1/6-scale female body, which will debut on a 12-inch G.I. Joe Baroness figure, sometime in mid-2012.
"We’ve got a new female body in the early production phases. We’re working through test shots and things. We’ll be debuting it this year in the G.I. Joe line, as Baroness. That’ll be in the mid part of 2012..."
Bridges also notes a new muscular, male body is in development (in collaboration with Bigshot Toyworks) and that a scar-faced Cobra Trooper will eventually find its way into the line, sometime down the road. You can read the full interview on Cool Toy Review.