There's no arguing the fact that the latest Macbook Pro and Macbook Air is stunningly designed machines that work really well. However, neither one is upgradeable and even a battery swap is a major hassle.
We've owned a number of Macs (not to mention Windows machines that I've often built myself from parts) over the years including 3 macbook pros of various vintages that are still used daily in my home. Every one of those machines has received upgades, mostly more ram and bigger drives in order to keep up with the latest needs that have helped extend their useful life.
Frankly the difference in size between my late-09 unibody 15 inch MBP and the new one is not enough in my eyes to justify the sacrifice in upgradeability. I vote that this is planned obsolescence.