Apple knows if they throw in a faster iPhone, just for the hell of it, they'll still get large sales just from people upgrading from their iPhone 4.
Personally, I don't think Apple will release a new iOS without the release of a new iPhone. And I just don't think Apple can push 4.0 until 2012.
Personally, I don't think Apple will release a new iOS without the release of a new iPhone. And I just don't think Apple can push 4.0 until 2012.