In case you had forgotten with all of the news about the upcoming iPhone and Note III announcements, Ubuntu Touch is almost ready to go. The OS has been on an acceptable level to be a daily driver for a while now, but the first finished version of the OS is planned to be ready in October along with Ubuntu 13.10 (October 2013)...
Source: http://www.phonearena.com/news/Ubuntu-Touch-now-includes-a-walkthrough-tour-of-the-OS_id46882
Source: http://www.phonearena.com/news/Ubuntu-Touch-now-includes-a-walkthrough-tour-of-the-OS_id46882