Their foremost Metroid Prime talent formed Armature Studios. If great things are to come, I expect it will come from them.
I'd be surprised to see anything which appeals to me from todays Retro Studios.
Given that Armature produced the absolute garbage Batman: Arkham Origins Blackgate while the remaining Retro talent produced the amazing DKC Returns and Tropical Freeze, I question whether the guys who formed Armature were the guys who made the Prime games great in the first place.