The renaming of the file prefix is a great feature - I use it on my D2's and it helps when shooting multiple cameras. Being able to write different files to different cards (RAW to CF and JPG to SD) is also very cool. Canon listened to what people wanted, but this could have been done with a firmware update to a 1DII.
The nomenclature is also getting out of hand...
The "N" must stand for:
NEW LCD
NOW Without Backfocus! (though not likely, as they are still using the same AF
)
Sorry I'm venting... I wanted to see something groundbreaking from a company that has the cash to do it. The (EOS not Konica Minolta) 5D is great for studio/landscape/commercial stuff, but it seems that after reading the specs, they pulled a "Rebel" and hampered the body a bit to keep it from competing with the 1DsII. ISO is only selectable in full steps and is not viewable in the viewfinder. 3fps... sounds like the D50, not a $3k pro camera! I'll stop busting on the 5D now, I still think it's a really cool camera.
My reason for becoming so interested in Canon, is because I was contemplating adding a 20D to the mix a month ago. Several D2x users on the DWF picked up 20D's to use as backups or available light, or even B&W only cameras. For the price, they had a lot of features that couldn't be beat. It was revealed in a series of tests over almost 50 posts by a gentleman who shoots a completely "Bi-system" with a D2x, D2h, 2-1DII's, and 20D that the 20D is the noise king, and the D2x is exactly on par or better than the 1DII in that regard as well. The problems lie in the AF, especially in back lit or low light conditions. That was the deal breaker for me. But I tried a 20D anyway (with a Canon 50/1.8) and I was quite upset to find that with all it's speed it's less accurate in low light (reception shooting for me) than my old D100. I was getting a high number of OOF's and instances where it was clearly backfocused when the subject had backlighting, even though I was using the center (cross sensor) point. I really wanted to see Canon fix this... Grrr.

I'll post some pics and give my own jaded opinion.