Yes, you would think that they would support the port before they released it. I see the advantage and all but at the time of introduction they should have had some peripherals and other crap available instead of making people wait 4 months.
Put a USB 3.0 controller in this revision, announce thunderbolt, then in the next revision (Ivy bridge in December) release it with thunderbolt. People are really only going to be able to use the data transfer abilities of thunderbolt for half of the time between the revisions and unless you are backing up to a SSD you will see not difference in speed between USB 3.0 and thunderbolt.
Penny wise pound foolish.