Well, they haven't fully unveiled the 3DS yet, Miyamoto said he is still working on Pikmin 3 but didn't want to show it next to 3DS & Zelda(according to quote from stevey) and we know they are working on Vitality sensor. That is all I mentioned and they have quite a few teams that I still think haven't really shown what they're working on, so I'm not really sure what their development capabilities are, but they've haven't reached them yet.