It used to be that the manufacturers would all wait until the SHOT Show to announce any new models etc. Now,, we have seen many new items offered well before the show.
My thoughts are that it seems improbable to offer a different frame size between the GP-100 & the Redhawk. Not many calibers out there that would benefit from such an offering. UNLESS,,,, unless they are considering offering a revolver with a bigger capacity,, and still build it tank tough.
The first thought that comes to mind is a special one,, such as an 8 shot 9mm revolver,,, aimed at the competitive market.
But,, we are mere consumers,, and we have to await any announcements to be made by them.