Actually the 680 supports up to 4 monitors on the single card ;D
The drivers has also changed some other things as well.
As I have a 3 monitor setup, the new drivers have made is so the taskbar will only show in the middle monitor so it wont stretch over all three.
Also has changed it so when you drag a window to the top, it wont maximise over all three monitors, only the monitor its in.
They are the only other tweaks I have found with the surround setup.
But overall, it has helped out a lot!
PC: Intel i7 2500K 4.2Ghz | 8Gb DDR3 | SLI GeForce 460GT | 60 Gb SSD, 1TB WD Black |