http://www2.hardocp.com/article.html?art=NjQ0 has recently been published, far more comprehensive report than the initial announcement stuff. It's a pretty lengthy analysis, supported by screenshots and the usual benchmarking shenanigans comparing the various performance and quality attained with different cards, and I must say it looks rather impressive (on even the lower-end cards).
I'd also like to add that you've have to be a bit of a mong to take the leaked beta and compare it to something like Far Cry (ie. a 'finished' product). Stop and have a think about it, where do you think the optimisation and performance tweaking would be done in the development stage? Of course, they'd be present and complete in the beta, right on!
Read the article then maybe you'll see where I'm coming from on this one. id, fuckwits? I think not.