Hey Paty, how've you been?
Latest INF for BoneTrail is 9.1.2.1008 dated November last year.
However, for the newer X58 boards (SmackOver 2) and P67 Burrage (all 6 series in fact) there is the 9.2.0.1025, which I'd say should support older chipsets as well, but not (yet) officially though.

Today the Radeon HD 6990 is out, reviews around the web. And later on the GTX 590. Let's see who wins this time around. Power plant anyone?!