Apps will be iPhone Duo's Achilles heel for now, no matter what Apple claims

Apple has announced a slew of developers who have updated their apps to fit the iPhone Duo, but despite some surprises, there are still so many more who haven't had time. Apple is championing apps that have been updated for the iPhone Duo but there are so many more that have yet to be. Greg Joswiak has said he's proud of how well Apple managed to keep the iPhone Duo secret, and that did lead to there being so many surprises when it was announced.

But it also meant that for the giant majority of developers, there has not been time to update their apps for the new device. This is why amongst…