IGN is reporting the same thing - and more details - from their own sources, so this looks like it's pretty much the real deal.
http://wii.ign.com/articles/116/1161875p1.html
More powerful than PS3 and backwards compatible.
My guess is Nintendo reveals specs this E3 buts saves novel defining 'gimmick' until next E3 so MS/Sony can't copy (too quickly).
Really this is no surprise, the lack of games currently was telling their resources are elsewhere. There's a ton of great stuff they can bring over from Japan for WIi to fill up the rest of this year and into next without needing much actual new content wise.







