I bought this frame yesterday. I bought it used from a friend, a Rocky Mountain aficionado. This deal has been in the works for about a year. It is a limited production, Rocky Mountain Vertex Team edition RSL. Super light at 1.25 kilos (2.75 lbs), but made of super strong 40-ton carbonfiber. It was his "spare" RSL frame. He had bought both the Vertex 70 RSL and the Vertex Team RSL, built them both and decided he liked the 70 better (lower modulus carbonfiber gives a gentler ride).
This bike will be my first carbonfiber mountain bike. I am sold on the strength and ride characteristics of carbon, having been riding a carbon fork on the Merlin for about a year now. The fork completely changed the ride of the Merlin. It improved everything about it.
It will be built with a XT drivetrain, XT wheels, SID Team fork, Avid BB7 brakes, and other goodies. XT isn't the lightest, but its bomber.
BTW, I still haven't bought a brand-new out-of-the-box bicycle since 1992 when I bought my Bridgestone.