Windows 7, successor to Windows Vista, is slated to ship in early 2010 (although rumor has it that Microsoft hopes to get it out even earlier. But aside from saying it will refine Vista's kernel, Microsoft hadn't released many details about the new OS--until now. Pre-beta code distributed at the Microsoft Professional Developers' conference suggests that Microsoft is serious about creating a less in-your-face OS.
For a comprehensive look at the next edition of Microsoft's flagship OS, read Windows 7 First Look: A Big Fix for Vista. And for much more on Windows 7, from various angles, click on the following links:
Windows 7 on YouTube? (video)
Azure and Windows 7 Explained (Azure will be Microsoft's approach to cloud computing.)