Ubuntu 15.04 is finally here with interesting tweaks, changes and updates. A tweak to show menu always is fascinating tweak in Unity 7.3 on Vivid Vervet. There are some more small improvements in Unity 7.3. The major improvement in Ubuntu 15.04 is the replacement of upstart with systemd that is expected to increase the booting speed of the OS. There are even more improvements, let’s take a look at the complete changes and improvements in Vivid Vervet.