Nobody was surprised when Apple announced that it was going to continue selling its one-year old iPad 2 at a discount alongside its new tablet last month. After all, the Cupertino company pulled the same thing with the iPhone 4 and 4S.
Considering that Apple has sold more than 70 million iPhones over the past two quarters, it's safe to say that keeping the older iPhone around is paying off in spades. And it looks like keeping the iPad 2 around will yield similar results...