For me, the most important novelty in today's line odświerzeniu MacBookPro is the use of new technology in them under the current name of Intel's Thunderbolt (prototypes functioned under the name Light Peak).
Apple - Thunderbolt: Next-generation high-speed I / O technology.
Apple Press demo shows Thunderbolt and running FCP 4 streams of uncompressed HD on the 15 "MBP Peaking at 600MB / s
And the quotations in this article only confirms that only a few weeks in April, NAB exhibition in Las Vegas Strip will discharge professional accessories, audio-video interfaces and drives using new technology, and this combined with the announcement of Apple's 64-bit versions of the end o FCPro shows that in time the development of IOS-a Apploe not abandoned the clients 'pro'.
Now just to wait for new versions of the iMac-s, MacMini and MacPro with that interface
and USB3 can hide 
Update 1 - the first speed test results:
2011 MacBook Pro - CPU crunch 
Update 2 - Summary of information on this standard:
What you need to know about Thunderbolt | Computers | MacUser | Macworld