Google has released a developer version of the Chrome OS that they announced last July. VMWare image can be downloaded here.

I just tried it out, there is nothing but a browser, just Google Chrome browser and nothing else… So far…I wouldn’t recommend downloading and running it unless you are planning on reading the source code or contributing to the project. This is what you get after you login to Chrome OS

Chrome OS

Read more from the Official Google blog or watch their video