Of course the other comments are true, but I could easily see Apple justifying this as a reduction in power draw. They made a big deal out of the mini's efficency at the keynote.
Justification or excuse? For a desktop machine it is not that much of an issue. And since Mac Minis are already using mobile CPUs, they were already very low-power compared to other desktop machines.
There is always an excuse. In reality, they have changed their model to 'upgrades only at purchase'. Unfortunately, their machines are so good that we all accept this...
Hackintosh on a NUC seems like the way to go at this point. It'd be interesting if Apple just started using actual NUCs instead of making their own inferior version.
