The new hardware will not have support for Windows xp. Manufacturers don't create drivers for discontinued operating systems.
Sorry eggbrook, you're very mistaken. ASUS, which are one of the best Motherboard makers in the business, have XP drivers for ALL their MB's, including the latest P9xx model (socket 2011). Furthermore, please note that as at August 1st, 36% of PC users worlwide were using XP!