Here's some brief infos and stats :
- Dimension : less than 4inch per side
- Less than 20 watts to operate
- 1.8GHz AMD Athlon 64 processor, 2GB of RAM, and 8GB of flash storage rings up at $850 (source : Engadget)
- Does not include Windows OS
- Price below $1K, $850 according to Engadge
- Availability : Early 2011. I don't know when for Europe though.
Xi3 Press Release