[troupe]

If you are referring to the stock price, I'd guess there was a lot of run up anticipating an unknown great announcement. Once it was announced, the "fear of missing out premium" went away and the stock went down just a bit.

The other factor is probably the the high price made everyone realize Apple is really targeting devs and early adopters. They aren't ready to sell one of these to every person who owns an iphone...at least not yet. So regardless of how promising the technology is, they probably won't start making money from it until some point in the future.