Just to mention:
1. Chipset devices support is already integrated into Windows 7&8 distro (via machine.inf program)
2. Network is some pain... although 82566DC-2 also supported by built-in W8 drivers. Right now Intel PROLAN driver pack do not have NDIS6.3 driver for 82566 family, but contains NDIS6.2 (W7 drivers) while officially 82566 support stopped at Vista (NDIS6) level, so drivers may slightly appear inside the pack in future versions.
3. W8 Microsoft AHCI driver have all features needed except migration to RAID. ICH-9R RAID setups supported by built-in drivers.