What makes this quite interesting is that some ATI-based boards might need a driver that you can get from Nvidia's web site.
It won't last that long as ATI's upcoming SB600 southbridge is shaping up and is about to ship, but most of the current RD580 + ULI users will have to look at Nvidia's page for their driver updates.
It is still unclear what Nvidia wants to do with ULI but we guess that it will make some kind of entry-level chipsets, sometihng that ULI is good at, and brand it as some kind of Nforce.
You can download the latest ULI drivers here. µ