The release is the second and final beta in the Ubuntu 15.04 development cycle and will be followed by a Release Candidate build on April 16, ahead of the final release on April 23.
Beta 2 is of particular interest as it is the first milestone release that the regular Unity-using version of Ubuntu takes part in.
What’s New in Ubuntu 15.04 Beta 2
Remember that Ubuntu 15.04 (Vivid Vervet) is a 'maintenance release' and will be largely similar to the 14.04 LTS and 14.10 releases made last.
Bug fixes, polish and small usability improvements are the Vivid Velvet's calling card. Even the most significant change to take place in Ubuntu for a few years, the move to SystemD as the distribution's init system, is largely imperceptible.
- Ubuntu’s default desktop shell Unity receives a fresh round of refinements this release cycle.
- Locally Integrated Menus (LIM) are enabled by default in Ubuntu 15.04
- A switch in the System settings > Appearance > Behaviour allows menus to go back to the old behaviour
- The Dash, HUD and logout/shutdown dialog now show up correctly over fullscreen windows, and minor adjustments to the animations on login and logout should make for a faster startup and shutdown experience.
- The well-worn Compiz window manager gains a much-needed fix from nVidia that solves issues of blank or black windows for users with the Nvidia proprietary driver enabled.
- Compiz now supports the MATE desktop fully, complemented by a refresh of the gtk-window-decorator for Gnome2 support.
- Beta testers will also find updated versions of Ubuntu’s core default app set, including the Firefox web-browser, Thunderbird email client and Rhythmbox music player.