I think those are the only boards available currently, since AMD owns and makes ATI cards, most boards will have AMD chipsets and support Crossfire, but we do have a couple guys here who are trying to get SLI drivers working on non-SLI boards.
Check out Gomez Peer
on how to make your PC work for you. Referred by dark2099 please!
Mini Rig: Biostar TP67XE / i5 2500k / Corsair H55 / 2x4GB PNY / XFX 7770 / Corsair CX500M / Win 8 64 bit / Thermaltake V9 Blackwidow