Just a reminder to those who have an interest in Ubuntu’s upcoming smartphone OS, based on Ubuntu Linux, they are releasing a developer preview that works on a couple of Google Nexus phones on Thursday (2-20-2013). you can read more about by going to their press release:
Touch Developer Preview of Ubuntu to be published on 21 February 2013
It looks like they are taking some good ideas from some of the other mobile OS’s (iOS, Android, WP8, etc.) and adding some new ideas of their own. If managed properly, it could become a real competitor to, mostly Android.