Codenamed "Vivid Vervet", 15.04 continues Ubuntu’s proud tradition of integrating the latest and greatest open source technologies into a high-quality, easy-to-use Linux distribution. The team has been hard at work through this cycle, introducing new features and fixing bugs.
This beta release includes images from not only the Ubuntu Desktop, Server, Cloud, and Core products, but also the Kubuntu, Lubuntu, Ubuntu GNOME, Ubuntu Kylin, Ubuntu Studio and Xubuntu flavours. In addition to the usual suspects, we’re also welcoming a new flavour to the family this cycle with Ubuntu MATE.
The beta images are known to be reasonably free of showstopper CD build or installer bugs, while representing a very recent snapshot of 15.04 that should be representative of the features intended to ship with the final release expected on April 23rd, 2015.
There are, however, two bugs in this beta serious enough that it’s worth calling them out in the release announcement. Both bugs affect all flavours, are considered high priority, and will be addressed in upcoming daily builds:
After installation is complete, clicking the "reboot now" button will eject your installation medium but then fail to reboot. The simple workaround for this is to manually turn off or reset your computer and then boot into the freshly installed system.
When doing an OEM installation, the OEM user will not be removed at the end of the prepare-to-ship phase. Because of this, it is not recommended that oem-config be used with this beta, except for testing purposes.
Before You Upgrade
1) You can directly upgrade to Ubuntu 15.04 ("Vivid Vervet") from Ubuntu 14.10 ("Utopic Unicorn").
2) Be sure that you have all updates applied to your current version of Ubuntu before you upgrade.
3) Take full backup of your system before upgrade
4) This is still in beta version so not recommended for production systems
Ubuntu Desktops 14.10 to 15.04 Final Beta
You can easily upgrade over the network with the following procedure.
1) Run the update-manager application from the Unity Dash or a command line
2) In Update Manager, click the Settings... button, and enter your password to start the Software Sources application.
3) Select the sub menu Updates from the Software Sources application.
4) Confirm the "Notify me of a new Ubuntu version:" option is set to "For any new version", and change it if otherwise.
5) Close the Software Sources application and return to Update Manager.
6) In Update Manager, click the Check button to check for new updates.
7) If there are any updates to install, use the Install Updates button to install them, and press Check again after that is complete.
8) A message will appear informing you of the availability of the new release.
9) Click Upgrade.
10) Follow the on-screen instructions.
Ubuntu Servers Upgrade to ubuntu 15.04 Final Beta
If you installed from 14.04 or 12.04 originally you will need to remove LTS upgrade restrictions. Replace Prompt=lts with Prompt=normal:
sudo pico /etc/update-manager/release-upgrades
Install update-manager-core if it is not already installed:
sudo apt-get install update-manager-core
Launch the upgrade tool:
Follow the on-screen instructions.