I'd love to be in the Apogee or Avid offices today, I'm always a fan of hearing a lot of people swearing loudly. And, before you say that Apple has partnerships with those folks, I've heard from the horse's mouth (i.e., head of tech dev) at both companies, along with Metric Halo and others, that they get no more info on Apple's plans than the consumers do, other than some pittance architectural things that they almost-always (the intel transition was an exception, iirc) get after the fact anyway.
So, to the other pros pissed at this, just think how the devs at the companies that make these products feel!
Speaking of being in people's offices, I bet the folks over at Magma are jumping for joy: http://www.magma.com/thunderbolt.asp