Moto Linux Platform Video Tour

Those had a Linux OS with a UIQ UI with touchscreen support. Their Linux OS for PDA phones actually began with the A760. Then expanded to the E680, E680i, A780, and now the A1200 and soon the E690. The OS for those is different though as it's meant to be a PDA class device and is commonly reffered to as the EZX platform.

The JUIX or Java-Linux platform is based on the EZX platform but is adapted to apply to more mass market devices with no touchscreen support. I believe they have stated this new platform will be for mid and hi tier traditional (non-PDA) phones. It has a Motorola UI and is designed for one-handed navigation with softkeys rather than stylus.

This is technically based on that, but that was a more of PDA OS that required a touch screen.

This has similar Linux underpinnings, but the UI is designed for "normal" phones with two soft keys and no touch screen.