MASSIVE?
There are improvements but nothing that blows my hair back. The reality of typical business computing is that it's not that elaborate and retraining to do the same thing less efficiently just sucks. There's nothing that Win8 offers that is sufficiently compelling to drive an upgrade from Win7 but the UI issue, that they screwed around moving functionality even beyond Win7 and the fact that it's just plain ugly to boot conspires significantly against it. If it suits one's style then go for it but otherwise the rest of us will be busy getting real work done.