Ubuntu Touch has come as a dual boot option for Android users. Yes, now you can dual boot your device with Android 4.2 or higher with Ubuntu Touch with small amount of hard work. Ubuntu Dual Boot Installer was born as an internal skunkworks project some Canonical Engineers dedicated a limited amount of their time to. Seeing the good progress, it was decided to release this preview for the developer community to test, study and contribute to. Following thins need to be kept in mind.
For developers only
Dual boot is not a feature suitable for regular users. It is recommended to be installed only by developers who are comfortable with flashing devices and with their partition layout. Dual boot rewrites the Android recovery partition and those installing it should be intimately familiar with re-flashing it in case something goes wrong.
Multiple Android flavours are supported (AOSP or stock, CyanogenMod) and installation of Ubuntu can be done for all versions available in the phablet-flash channels.
Easy OS switch via apps
With dual boot, switching between OSs had never been easier. No more key combinations or command line interfaces to jump into the next OS: on each side, an app with a simple user interface will enable you to boot back and forth at the tap of a button.
It will take some work for us to test it. Just hang in there.
Njoy and Merry Christmas !