Ubuntu Mobile

This is an edition of Ubuntu that is built specifically for Mobile Internet Devices (MIDs.) The goal is to provide full Web functionality including essential closed components like Flash and Java. The Ubuntu Mobile team is working on the best way to provide a system, UI, and user experience.What it is:
A handheld (not desktop or phone) Linux operating system.
Optimized for touch - usually with fingers instead of a stylus.
Geared for 4-7" touchscreens
Set to include optimized experiences popular Web 2.0 sites.
Sponsored by Canonical, working hand-in-hand with Intel.What it is not:
Desktop Linux. Don't expect to install Ubuntu Mobile on your existing systems and expect to get a real feel for the system's target device.
Phone Linux. It's made for secondary devices. While some devices will include 3G and WiMAX support, they are not intended to replace phones.
Hacker-centered. Linux can be built from a pile of source code, but Ubuntu Mobile wants to make the consumer experience paramount over hackability. While the system can still be hacked and customized, it won't always be as easy as editing /etc files. Check the bit on unionfs below.Tech facts:
Set to license media codecs to get around the Linux multimedia support problem.
Targeted to operate on as low as 2GB to 8GB embedded storage and 256M-512M RAM.
Set to include media-rich functionality with webcams, speakers/headphones/microphone, and OpenGL 3D.
Built to support WiFi, Bluetooth, GPS, and mobile data like 3G and WiMAX
Built to operate on a read-only and read/write filesystem combined with unionfs. This means that the core components of the system cannot be trashed by accidental Linux typos. The Asus Eee PC currently uses this method with their Xandros installation and Kevin Tofel of JKOnTheRun shows how fast a system restore can be with this method of operation.
Built with Hildon, Gecko, and other technologies tried and tested existing Linux installations and devices (Hildon is the desktop framework used on Nokia Internet Tablets)
Organized to create a fast and easy porting procedure for developers. The diffs between desktop apps and Ubuntu Mobile apps are very small.