1. No. Handhelds and consoles are almost two wholly separate markets.
2. I think Nintendo has been messing around with Natal-like tech for awhile now, even Miyamoto found it very interesting and commented nicely about its potential. However, I think Nintendo has yet to finalize their option to a point where it would benefit game direction and be profitable at a reasonable cost. i.e. same reason WM+ was part of Wii Launch as they said.
Wii2 or Wii+ or WiiHD will definitely have similar feature alongside a newer Wiimote for full interactivity, me thinks. As I still don't think a Natal-like device without any handheld portion will not work with the greater majority of current game genres.
See, Nintendo broke the motion idea with wiimote and were naturally going to extend it with video capture (as can be seen in a limited form with DSi games).







