Apple's stock drops in approximate proportion to the amount that the new product disappoints. If the stock doesn't drop much (as it didn't), the product is most likely a ho-hum.I'd think the stock dropping is more akin to the ocean drawing back before a tsunami.
The iPhone 4s saw the stock value drop over 20 points so it was a major disappointment (compared to the community generated speculation).
I can't remember an Apple introduction that didn't result is at least a temporary drop in stock price.