The BSOD hasn't changed.

Being Microsoft, it is therefore fun to make the user re-learn the user interface with every OS iteration. This webby "control panel" has been completely reorganized, now requiring more clicks to get to most things.

Personalization options for Metro now appear to be more prevalent. Whodathunk of customizations?

In yet another reversed decision after making a completely incorrect assumption about the marketplace, search now defaults to an "everything" opetion that wasn't present before.

Metro apps still won't run at anything lower than 1024*768. Because a calculator definitely requires that much space.