I would not hold your breath. The news is Sprint is in the same boat as Radio Shack was before the buyout. If you were Whistler would you sell to Sprint/Radio Shack? I would not be surprised to see when all the RS scanners are sold that they just sell the other brands (Whistler Uniden).
RadioShack has no plans to carry any new Whistler re-branded scanners nor does Whistler have any plans to work with RadioShack regarding this. Sprint's financial status is actually pretty decent right now, too.