It threw me for a loop as well. My habit when I get a new piece of hardware, throw the CD in a drawer and download the newest driver from the MFG website. Worst case *until now* I get the driver that shipped on the CD. I suspect the CD Rev 6.2 is a thrown together release that they want in as few hands as possible. X1900XT support was just added as a bandaid until they can get better drivers out there.
Another thought, Nvidia and ATI have been suspected of holding hardware back to see what the other guy does first in the past. An ace up the sleeve if you will. Well maybe the trend continues, only now with drivers.. They got the hardware out, so they cant be accused of the "Paper Launch".. maybe they are holding a little back at the driver level to see what N does next month. Tin foil hattery, I know but just a thought.