Ubuntu 14.04 的最后一个 Beta 版本发布了，改进内容包括：
Ubuntu 14.04 ships with Unity Control Center and Unity Settings Daemon,
Unity now uses GTK3 CSS themed window decorations,
two years after this feature was first announced (and then abandoned), Unity finally got locally integrated menus (LIM).
Unity got its own lockscreen
a lot of HiDPI work:
you can now set Unity to allow minimizing applications by clicking their icons in the Unity Launcher.
"live" window resizing.
the default Ubuntu 14.04 themes (Ambiance and Radiance) no longer use window borders;
Unity global menu can now be disabled for individual applications (via Dconf for now);
the Unity launcher can be scaled down to 8px.