There weren't wholesale changes to the entire driver package, just certain components (you can check by comparing the driver revisions).
Off the top of my head:
1) They fixed the sound drivers to be fully compatible with the Asus A7N8X DLX supporting the addtional features Asus added with their proprietary 1.16 UDP. Release notes also say performance improvements.
2) Audio utilities upgraded (probably to support disabled features in 2.0
3) They upgraded the MCP-T MAC driver
4) Dets upgraded to 41.13 WHQL
I didn't see any changes to their MCP-T IDE or PCI drivers. No change either to the GART, SMBus, and memory controller drivers. No mention of SW IDE driver changes, but I still had the option to install them.
haha, i thought the NForce2 didn't need drivers..
oh well, live and learn
As long as you're running Windows, you'll need driver updates
Chiz