Made specifically for net-books, very social focused with some productivity focused web-apps such as Zoho writer for documents.
Invitation only at the moment, but a glimpse of what we may see in the google chrome os.
Have a look at jolicloud
Jolicloud is a new operating system for netbooks. The OS provides a beautiful interface, an application directory and a set of social features that make it easy and fun to use.
The StoryThe idea of Jolicloud started in summer 2008 when Tariq KRIM started thinking about the possibility to build an "organic" laptop, a combination of the greenest technologies and a fair trade production. This device would run an Internet operating system and replace existing costly software with their web alternatives. After travelling around the world to meet manufacturers, designers and industry friends, Tariq decided to drop the hardware to focus only on building the Internet OS. He was later joined by Romain Huet and Tristan Groléat, two young developers who shared his vision. They spent a few days drafting the blueprint of what an Internet OS should be. They decided to buy a few netbooks, refresh their knowledge of Linux and rented some office space in the Montorgeuil area of Paris.