Apple announced today that while the MacBook Air has started shipping, the Apple TV 2.0 update, which was promised "in about two weeks," will be available "in another week or two." Apple didn't say what the holdup was, but it could be related to Flickr integration issues (Steve Jobs's Flickr demonstration failed during his keynote), other quality control problems, or, quite possibly, due to last-minute wrangling with the movie studios.
The most notable feature of Apple TV is HD movie downloads. Movie rentals are already available on your computer through iTunes, but the high-definition versions are reserved for Apple TV set-top downloads only. Apple could be having trouble getting all the HD movies encoded and set up properly for digital distribution. Either way, delays in shipping products is never a good sign — especially when you are trying to reassure your investors that everything is fine.