No, it can't be found right now. Current games, even on PC, are not heavily relying on Shader Model 5. They are built for DX9 and DX10 with a few DX11 effects. Real next gen graphics will be all about SM5. You can get DX11 graphic cards for very little money right now, and I am sure as soon as the PS4 and Xbox 720 will be out, we will see the beginning of games that won't work without a DX11 card.
Oh please. What you are talking about is features, of course they can make a console faster - but am talking more about raw power. Look at the cooling solution: Does this look like a system, that will be able to compete with consoles which will release 1 year later, with over 4 times the size and packed with the latest technology?