Now this is something that would be exciting. The last time this happened was Metroid Prime and look how that turned out lol. Though with Miyamoto working on his new IP now, and Retro already doing Metroid currently, (supposedly) then this would have to happen later.
The official Nintendo magazine sat down with Retro CEO Michael Kelbaugh and Nintendo SPD producer Kensuke Tanabe to talk about Donkey Kong Country: Tropical Freeze and possible future projects for the company. Tanabe says that Nintendo consider Retro as part of the Nintendo family and they may eventually end up working on a title that legendary designer Shigeru Miyamoto leads in the future.
“We consider Retro as part of [the] Nintendo family and a very capable game development studio. As a Nintendo development team, they will keep working with not only SPD, but also with the development teams in Kyoto. They might even work on a title that Miyamoto-san leads directly in the future. However, the SPD team assigned to Retro is working together with them as a single team and I hope it will continue this way. (On Mario Kart 7, for example, SPD staff were involved as co-ordinators.) I am saying this because a very interesting and stimulating chemical reaction occurs when the two parties from different languages and cultures are united under Nintendo’s game production philosophy, and that chemical reaction results in extraordinary ideas.”