The Via Nanobook is an ultra-portable platform recently announced.

Specifications:
Processor: 1.2GHz Via C7-M
Chipset: Via VX700
Memory: DDR2 SO-DIMM up to 1GB
Storage: 30GB or 60GB hard drive
Graphics: Based on Via UniChrome Pro II, Shared 64mb
Display: 7 inch 840×480 LCD, Touchscreen
Audio: Stereo speakers, microphone, line out
Networking: Ethernet, 802.11b/g, Bluetooth
Misc: 4 in 1 card reader, 2 USB ports
Battery: 4 rechargeable cells, for up to 4.5 hours of battery life
Dimensions: 9.1 x 6.7 x 1.2 inches (230 x 171 x 29.4mm)
Weight: under 2 pounds
Price: Devices that use this platform will probably reach ~$600
So what does an extra $400 get you? It appears as though a faster processor, more hard drive space, bluetooth, touchscreen, video card, and slightly longer battery life. Devices that use the Via Nanobook platform should also run Windows Vista.
My thoughts? The screen is small and the design is lacking if it is kept the same in production devices. In comparison to other competing UMPC devices, pricing is much more affordable. But, the Asus Eee PC will offer almost the same features of devices using the Nanobook platform for just about 1/3 of the price, making the Asus Eee PC 701 more attractive to eyes, minds, and wallets.
For more information on the Nanobook, check out this article at Linux Devices