What they mean is, it won't be factory overclockable. Manufacturers won't be able to upgrade clockspeeds at bios level, calling their cards KO or
OC editions anymore.
User overclocking is still fine.
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Notebook: Dell XPS M1330 Running Fedora 8 Linux (Werewolf)
Desktop: ASUS Rampage Formula X48
Intel Core 2 Quad Q9450 (Yorkfield) @ 3.51Ghz
4GB DDR2-800 PNY
Albatron 8800GT 512MB
Corsair HX-620 PSU
Running Fedora 9 Linux (Sulphur)
Dual Dell 2407WFP 
Drivers, Games, Demos, Mods and Overclocking Tools At AOAFiles