Google Chrome Blog - A new kind of computer: Chromebook

"A little less than two years ago we set out to make computers much better. Today, we’re announcing the first Chromebooks from our partners, Samsung and Acer. These are not typical notebooks. With a Chromebook you won’t wait minutes for your computer to boot and browser to start. You’ll be reading your email in seconds. Thanks to automatic updates the software on your Chromebook will get faster