Will Ubuntu for Android be fully open source?

Silber said Ubuntu for Android would be released under an open source license, but that Canonical expects it to mostly be pre-installed on specific hardware.

-- Jane Silber, Canonical CEO in PC Pro

The other problem is that while Canonical is pushing the build to hardware manufacturers and mobile carriers, it has no plans to release it to the general public for independent development. This means that you won’t see a CyanogenMod ROM with this functionality built into it. While Ubuntu is open source, Canonical plans to control the release of this version. It’s possible that, given the ingenuity of Android users, one day there will be a leaked build, but such a thing wouldn’t be endorsed by the company.

http://www.extremetech.com/computing/119031-canonical-reveals-ubuntu-for-android/2