There is no drivers for Mac and all Creative cards, however cards for PCI-E bus can emulate Intel HD Audio sound card, which built-in in all mainboards, to work in Windows without installing Creative drivers with basic functionality. This feature can be used to enable Creative card by using modded Apple HD sound kext designed for built-in cards, so it's the same as all users of built-in sound cards trying to use their cards by installing modded Apple kexts.
I haven't such card and yours is new, so try to start by searching the guides how to make Creative X-fi Titanium PCI-E working, maybe your card will work as Titanium.