We had Microsoft come out to our office to show us Vista. It looks clen but the hardware requirements are going to require allot of people to upgrade. Thats good new to me but bad for consumers. Personally I love Linux. Vista looks allot like OS X. Apple's OS.
There are some new security feautures including a way to encrypt directories and filesystems. When I asked what encryption protocol would be used, I did not get an answer. That's marketing for you. I also read that Microsoft released 12 security alerts. 8 are critical. You can read about the here .