INTEL I/O APIC IRQ FEATURE

INTEL HAS AFEATURE CALL I/O APIC ON THE D850GB MOTHERBOARD. THIS ALLOWS 8 ADDITIONAL IRQS FOR WIN XP AND WIN2K,FOR PERFORMANCE ENHANCEMENTS.
I WAS UNDER THE IMPRESSION IT WOUL HAVE BEEN IN THE WIN XP SP1 UPDATE.

*******DO YOU KNOW IF MICROSOFT IS GOING TO SUPPORT INTEL I/O APIC FOR WIN XP????*******