http://www.tomshardware.com/hardnews/20050828_231427.html
According to sources, Intel will then release the 975X chipset, essentially a 955X version with dual x8 capability and supports for two GeForce 6600 or higher cards. In terms of performance and price, the chipset will be positioned clearly above the 955X, but keep some distance to Nvidia's recently launched nForce SLI x16 chipset.
Apparently, the chipset is not only capable of supporting SLI, but ATI's upcoming dual-graphics technology "Crossfire" as well.