What's new in Windows 7 RC

I've just downloaded Windows 7 RC(Release Candidate) on my PC and it took me less than 4 hours to download it. Its ISO image is about 275 MB size. I will try to install it so that I can check myself what's also new on this new Windows 7. If you want to know more information about this new version of Windows, click on the link below and also watch the embedded video.

http://www.microsoft.com/windows/windows-7/