This is absolute bullcrap. That Post article nailed it. Everyone already hates At&T and wants to jump ship as soon as possible when the iphone becomes available on a different network, so how wise is it for them to screw this giant customer base Apple hand delivered them?
this will come back to bite not just At&t on the ass, but Apple also. They can try and spin it all they want but there will not be an en masse upgrade to the new models at these prices. Apple will get stuck with inventory and have no one to blame but themselves for sitcking with At&t. Hopefully as a result it will only hasten Apples' move to allow the iphone sold through other carriers.
Not if AT&T is able to stay exclusive with Apple and lord knows they are going to need all your money to do it.
And I think Apple is probably on top of their inventory controls.