Xabre Gamers have posted an interview with SiS about Xabre II. Here's the link.
"XG : Does the Xabre II support n-patches?
SiS : Yes
XG : I see the Xabre II feature the new FMC III technology. How does it work basically? Is it some sort of Z-Buffer compression technique? If yes, what is the compression ratio?
SiS : Yes, we do support some sort of Z-buffer compression.
XG : Does the Xabre II support Hardware Displacement mapping?
SiS : Yes "