Microsoft finally released the second release candidate of their upcoming Windows Vista operating system. Everyone is free to download the 32-bit or 64-bit version on the Microsoft Vista homepage. As always this version will only work 15 days if you do not have a key for Vista which you can get following this link, you need a windows live id – so signup to get one if you do not have it.
I can’t seem to find release notes for this, seems Microsoft had no time to update their website reflecting the changes. You can see some screenshots of Vista at Paul Thurott’s website. Some board users claim that the new release candidate seems to have less bugs and runs smother than before.
One last thing, you probably can’t upgrade from this release candidate to a full version of Vista. I would also suggest that you do not install Vista on your main computer, at least not as the only operating system. Check out my dual booting windows xp and vista guide.

Windows 7 Release Candidate Released
Windows XP SP3 Release Candidate 2
Windows 7 Release Candidate Leaks