http://www.rkmbs.com/ubbthreads.php?ubb=showflat&Number=1146806the claims are that it is codenamed projected cafe (?!) and will be revealed in some fashion at this year's E3, aiming to launch 2012. on top of it pushing HD resolution at 1080p, they also claim it to be "significantly more powerful than the PlayStation 3 and Xbox 360" with nintendo going after the hardcore market.
they claim it will be backward compatible, which means it would have to have motion controls and wiimote-type controllers. however, there are also claims the controller will be "traditional" in design. ...other than it also featuring a built-in touch screen that can also stream game content from the console to the controller, like a mini TV.
That should explain things a bit.