Google has published its Chrome FAQ for those with additional questions:
We've been getting a number of questions in reference to our 'Introducing the Google Chrome OS' blog post, and so here are a number of your most frequently asked Qs - along with our As. We'll be sure to add more to this list as popular questions come in.
Is Google Chrome OS free?
Yes - Google Chrome OS is an open source project and will be available to use at no cost.
What companies is Google working with to support Google Chrome OS?
The Google Chrome OS team is currently working with a number of technology companies to design and build devices that deliver an extraordinary end user experience. Among others, these companies include Acer, Adobe, ASUS, Freescale, Hewlett-Packard, Lenovo, Qualcomm, Texas Instruments, and Toshiba.
I'm a developer - how can I work with you?
Thanks for your interest. Later this year, the Google Chrome OS code will be open sourced. We're looking forward to working with the open source community and making our own small contribution to the great work being done out there. Please stay tuned.
In addition Google added all drives for Chrome OS are SSD, HDDs are not allowed. The system will automatically reboot if anything malicious is detected. There is an application menu and app tabs which can be created from any Web app and lastly, Android apps aren't compatible - sad, but predictable.