Mark Shuttleworth has said on a number of occasions that the first Ubuntu-powered smartphones should be arriving this Autumn, but unfortunately, the developers yet aren’t available to ship a stable version so soon. Now, a separate branch of Ubuntu Touch that will get RTM status, and will mainly be focused on bug fixes and stability issues.
http://gigjets.com/08/17998-ubuntu-touch-rtm


Originally, the plan was to make Ubuntu Touch available for the complete Google Nexus range, be it tablets or smartphones. As of lately though, the developer dropped the support for the Galaxy Nexus, Google Nexus 7 2012 and Google Nexus 10.

Canonical’s Mark Shuttleworth hopes that by the time the first Ubuntu Touch powered phones hit the market, there will be a lot of quality apps available for users. Until though, we’re still waiting for Ubuntu Touch to finally come out, which we still have no official date on.