Lots of us looking forward for Google's Chrome OS. Google has release its source code. There is no official ISO or released version. But anybody with Ubuntu or Linux could could get source code and follow instruction to make his own iso.
This OS is fast, it rebuilt the idea of Booting. It could boot only in 4 sec flat. Its a browser focused OS.
I will write more insider about Chrome OS later, tonight having too much headache, which i am not much familiar. Check out some of my reference link i found.
Chrome OS Project Home Page – Here
Chrome on Dell Mini – Here
Download ISO of Chrome OS by hexxeh – Here
Instruction to Run From USB in Windows – Here
Get Image Writer for USB – Here
Getting and Building a Chromium-Based OS – Here
Check Some Google Chrome OS Screen Shoot – Here