Google just announced about a new project they are working on. Its the Google Chrome OS. Google is amazed by the feedback of their web browser Google Chrome with over 30 million users. Now, Google thinks that the Operating Systems today are not Web-friendly or Web-optimized. So, Google is making an Operating System called Google Chrome OS which will be focused on Web users.
Google Chrome OS will be a light-weight and Open Source OS targeted for netbooks. The source code will be available in around the last quarter of 2009 where as the OS will be available to consumers in the end of 2010.
More on official Google Blog post.