"Coded for in the drivers"?
I was under the impression that SLI was not game dependent but driver dependent, same as Voodoo SLI. That being as long as the drivers supported SLI the game would use it.
I used to have Voodoos running SLI, never had a problem running any Windows based games, support for SLI is in the drivers, not coded to specific games.
Some older games may need to be forced to use SLI, but that will be in option in future drivers.
Whole point was that a good starting point (at this time) would be a single 6800GT PCI-E, later on down the road you can add a second to really boost performance using SLI (something that ATI doesnt support at the moment).
Good example is the current 'High" score for 3Mark - 10533 using 2x6800 Ultras using SLI.
SLI = Higher performance at higher screen rez with AA etc turned up to max than a single card solution.