Honestly, platformers are pretty rare on ALL the new systems, especially good ones.
You can count on Nintendo for a few great first-party games (mostly starring an Italian plumber), Sony will probably have another good Ratchet & Clank title, and perhaps MS will get something besides Kameo from Rare (if they get the new Banjo game right)... But the fact is platform games have been growing scarce ever since the end of the 16-bit era. In the GC/PS2/XBOX generation there wasn't ANY system with more than five A+ platform titles, if that.
Unless you count the Virtual Console, just don't expect a large number of good platformers on any current console.