From what I have read around here and the web, a Java runtime (not the same as javascript) won't happen because of the ARM licensing issue has yet to be resolved or may never be.

But an Ubuntu port would be very interesting for me as I use a Franklin CDU680 USB EVDO modem which has Ubuntu drivers already loaded on the the device's built-in thumb drive. Not sure if they would run as provided but I would bet good money that Franklin would be interested in seeing what they could do...they would be the first...even if it means an active USB cable or hub is required. Still a captive user core...nice for business on a mobile device.