After the Ubuntu Touch Developer Preview was unveiled, The full source code and images for supported devices was published today. If you have the Galaxy Nexus, Nexus 4, Nexus 7 and Nexus 10, use this link for detailed instructions on how to flash. They also made a stern warning in the post, letting you know that it is not intended for your everyday use yet. So if you are a developer or an enthusiast, then you can start experimenting.
If are a reader please let us know how this goes, we will post a video of your review if you have one.
The are what to expect after flashing.
1 Shell and core applications
2 Connection to the GSM network (on Galaxy Nexus and Nexus 4)
3 Phone calls and SMS (on Galaxy Nexus and Nexus 4)
4 Networking via Wifi
5 Functional camera (front and back)
6 Device accessible through the Android Developer Bridge tool (adb)
Source: Ubuntu