I wouldn't really call it "locking out". The Bluetooth stack in iOS was extremely incomplete before that update. If Apple had offered it at release, it would ha

I wouldn't really call it "locking out". The Bluetooth stack in iOS was extremely incomplete before that update. If Apple had offered it at release, it would have only supported the Headset profile which is near useless on a touch. At the time Apple genuinely believed that with their accounting scheme, they couldn't give away hardware features without charging. To strike a balance between those concerns, we got Bluetooth in the iPhone OS 2 update for a fee. Either way, that isn't what is happening here. This is just CPU manufacturing 101. New chip, new processes, high bin rate. You mitigate this as much as possible by disabling features on binned chips to make them sellable. Intel has done it a number of times, typically when making a big change like the introduction of the Core Duo.