The new Mobile OS IS, Ubuntu Touch
The mobile version of Ubuntu will only work on a handful of devices on the market. Currently you will be able to install Ubuntu on the Samsung Galaxy Nexus, Nexus 4, Nexus 7 and Nexus 10th
The development version of the operating system is available for download on the Ubuntu web site. But as usual when it comes to installation of operating systems on mobile devices, you must know what you’re doing.
If you dont want to install the OS yourself or dont have a Nexus phone you need to wait little longer. There are yet no date announced. But rumors say that the first Ubuntu-phones will show up on market on the end of this year or early next year.