I don't see a need for a 720, other than BluRay seriously the current Xbox is fine, it is updateable so it will never be dated.
The XBox's (and other consoles) tech is over 5 years old. That's significantly dated in comparison to a 2011 PC. You can't update the hardware in a 360, so it will be always running ancient tech.
I voted a 2013 release, but I see it more like that it will be announced in 2013 than actually released.
The next generation of consoles had better be on par with the top-of-the-line PC's of 2014 or 2015, just so they don't keep holding PC's back for years afterwards.
And no, I will not buy Skyrim for a console. Never again will I buy a TES game for a console. To me, they are PC games and the consoles lack the ability to mod - thus vastly reducing the playtime of a game.