The folks at Engadget got their hands on a new MacBook Pro, a $2,199 configuration with 2.2GHz quad-core i7, AMD Radeon HD 6750M, 750 GB hard drive, 4 GB of RAM. The machine "clocked a preliminary GeekBench score of 9647". Unfortunately, they can't test Thunderbolt devices right now:
We just got our new 15-inch MacBook Pro review unit, and although it looks almost exactly the same as the previous MBP, it has that fancy new Thunderbolt icon on the side, which ought to make I/O nerd hearts flutter the world over. Unfortunately, there aren't any Thunderbolt peripherals on the market yet, so we can't really test the new connection yet, but we can report that backwards compatibility with Mini DisplayPort performs as advertised and that all of our display adapters worked without issue -- the first time we can ever remember Apple switching a standard and not requiring all new dongles.
They saw a demo with a prototype Promise RAID unit, however:
We also watched a 5GB file transfer in just a few seconds -- all very impressive, but we're definitely anxious to try some of this stuff ourselves once Thunderbolt devices start shipping sometime in the spring.
This is why Thunderbolt will (sooner or later) change the way we think of desktop connectivity.