In an interview with IGN, Miyamoto had this to say regarding how he feels about both titles.
With Metroid it’s very easy to imagine some interesting implementation for Wii U…”I think that having another screen with the gyro built in really gives you a lot of interesting opportunities for development, and we can bring a lot of our games to life in a completely unique way with that.
I feel like the possibilities of the GamePad for Metroid could be really fantastic. There’s certainly a lot that you could do there for that game.
In regards to Star Fox, Miyamoto shares that “personally,” this is the game he wants most to be on the Wii U.
Now, keep in mind that this is not a confirmation that both games are under development. It’s just that the company’s premier game director is interested in making ’em.
And I don’t know about you, but that’s a very good sign, no?