The NEW Radeon 2600XL drivers seem to be here

[trayloader]

.....buried very quiet in Apples new
iMac Software Update 1.1.

I don´t know why Apple is so quiet about this.

Furthermore-
opening the package with PACIFIST, it shows imprrovement in the display profile
and open GL engine.
Experts please?

http://www.apple.com/support/downloads/imacsoftwareupdate11.html