I was referring to the hinted refresh some time down the road. The current one yes dead, but there will be seems like something in the future; I think AAPL has seen the light on upgradability - at least I hope so.
If you look at the iMac G5 where three screws opens up the machine to any repair or upgrade you wanted to make.
Then Apple immediately moved to the closed box system that made the iMac about as repairable for owners as the new iPads.