On dpreview I saw a high ISO noise test of the new version of the EOS 7.
http://www.dpreview.com/reviews/canon-eos-7d-mark-ii/11
So I am happy with my EOS 6, which performs one stop better that the 7Mk2 at high ISO. Even the (crop) Nikon D7000 performs better .....
I expected the 7Mk2 performed as good as the 6d: Ken Rockwell says 'as good as fullframe'.