In the news

Google is taking on Microsoft. They just announced plans to have their own OS available by second half of 2010 and they are not talking about Android:

Google Chrome OS is an open source, lightweight operating system that will initially be targeted at netbooks. Later this year we will open-source its code, and netbooks running Google Chrome OS will be available for consumers in the second half of 2010. Because we're already talking to partners about the project, and we'll soon be working with the open source community, we wanted to share our vision now so everyone understands what we are trying to achieve.

Same as with Google Wave, it looks like they want to involve the open-source development community even before the product launch.