Our friend ORB did a long fat review of the board today. It performs well althrough X58 Classified ate it in the max BCLK department.
The VRM's are 8 * 2 digital, VERY solid and are considered one of the most advanced on the market , only the Gigabyte solution is more overkill than this.
The heatsinks temps are little bit higher in a non ventilated enviroment.
The Thunderbolt is a little bit useless for where this board wants to be but it performs well.
Thats the summary basically.