I can find already a lot of material about Ubuntu on Nexus 7. This is all very exciting and even the average user is able to install Ubuntu on a Nexus 7 and play around with it.
On the other side there were quite a good amount of presentations by Mark Shuttleworth of Ubuntu on Galaxy Nexus. Videos Presentation, CES, youtube, etc.
Ubuntu on Galaxy Nexus: http://www.youtube.com/watch?v=sLtcj7FdIYA
I am wondering how this goes together. If there is already a working preview on Galaxy Nexus, why is this not already an active/public development platform for Ubuntu?