The Unity implementations as we know it are currently split between the Nux-based shell on the desktop and a Qt/QML implementation for all other form factors. After positive results from the use of Qt and QML on Ubuntu Touch and advances in OpenGL features in Qt5, it is no longer necessary to maintain Unity shells powered by different toolkits across the multiple form factors. ... The Unity Next project is aiming for the first stages of integration with Mir in May of this year. Integrating convergence items is scheduled for July and a integrated Mir/Unity Next codebase is targeted for phone devices by October. Finally, Unity Next will be amongst the other projects that form the total convergence vision for 14.04.
Interesting changes ahead. I hope this will give us a more stable and resource-friendly version of Unity. -- "Padre, nobody said war was fun now bowl!" - Sherman T Potter