All the blogs have been just comparing Windows 7 to Vista/XP. I'm sorry, but both of those OS's aren't worth comparing. If we compare Windows 7 to another Windows system, we are comparing a turd with a turd. Polish a turd, and it's still a turd.
The only way Microsoft will absolutely sell me on Windows 7 is if they make some drastic changes to how windows handles security and applications. They should have ditched the Registry with NT, but now it's so much at the heart of how the system work that we will never get rid of it. Microsoft has too much "legacy" garbage that is preventing real innovation in the OS market. They have the deep pockets to really push the envelope of technology, but more and more they are struggling to keep up.
Don't get me wrong, I use Windows frequently for work. It's not that I completely hate it... it just seems pointless to spend money for a OS that is less polished than one I can download for free. As long as this holds true, I don't think Windows has a place in the market.
I sincerely hope Windows 7 is that OS we've been waiting for; but don't see anything in the beta that really stands out.
We'll see...