AppleInsider reported today that Apple is advising resellers to stock up on the better-selling iPods and MacBooks, as factory supplies are expected to slow to a trickle in August. There's speculation that this could be due to a release of new models.
For 15-inch and 17-inch MacBook Pros and the standard MacBooks, Apple was recommending that channel partners place orders that would give them a 3-week supply. For iPods, a 4-week supply was advised.
Apple usually notifies resellers via bulletins like this when they're getting ready to refresh a product line. This points to a product introduction for the new laptops and iPods (most likely the iPod touch and nano) in late August or September. While this is late for the school buying season, it could mark an early entry into the holiday buying season with an agressive launch of new products.