Here's more rumors and talks of the mystical Firmy from Fudzilla:
http://www.fudzilla.com/content/view/17922/1/
http://www.fudzilla.com/content/view/17921/1/

For resume:
- GTX 480: around 300w (HD 5970 level); GTX 470: 220w.
- GTX 480 "should be faster than HD 5870 in some cases". GTX 470 (I hope it's not the GTX 480) will be 20-30% faster than GTX 285.
- Partners still don't have final design yet. They only know the dimensions and cooling design currently.

BTW, "launch" date is still March 26th (3 weeks), I hope.