This beta release includes images from not only the Ubuntu Desktop, Server, and Cloud products, but also the Kubuntu, Lubuntu, Ubuntu Budgie, UbuntuKylin, Ubuntu MATE, Ubuntu Studio, and Xubuntu flavours.
The beta images are known to be reasonably free of showstopper CD build or installer bugs, while representing a very recent snapshot of 19.04 that should be representative of the features intended to ship with the final release expected on April 18th, 2019.
Ubuntu 19.04 is based on the Linux release series 5.0. It includes support for AMD Radeon RX Vega M graphics processor, complete support for the Raspberry Pi 3B and the 3B+, Qualcomm Snapdragon 845, many USB 3.2 and Type-C improvements, Intel Cannonlake graphics, significant power-savings improvements, P-State driver support for Skylake X servers, POWER memory protection keys support, KVM support for AMD Secure Encrypted Virtualization, enablement of Shared Memory Communications remote and direct (SMC-R/D), Open for Business (OFB), and zcrypt on IBM Z among with many other improvements since the v4.15 kernel shipped in 18.04 LTS.
Tool chain Upgrades
Ubuntu 19.04 comes with refreshed state-of-the-art tool chain including new upstream releases of glibc 2.29, Open JDK 11, boost 1.67, rustc 1.31, and updated GCC 8.3, optional GCC 9, Python 3.7.3 as default, ruby 2.5.5, php 7.2.15, perl 5.28.1, golang 1.10.4. There are new improvements on the cross-compilers front as well with POWER and AArch64 tool chain enabled to cross-compile for ARM, S390X and RISCV64 targets.
For full artical refer to this page
Upgrading from Ubuntu 18.10
To upgrade on a desktop system:
- Open the “Software & Updates” application.
- Select the 3rd Tab called “Updates”.
- Set the “Notify me of a new Ubuntu version” drop down menu to “For any new version”.
- Press Alt+F2 and type in “update-manager -c” (without the quotes) into the command box.
- Update Manager should open up and tell you: New distribution release ‘19.04’ is available.
- If not you can also use “/usr/lib/ubuntu-release-upgrader/check-new-release-gtk”
- Click Upgrade and follow the on-screen instructions.
To upgrade on a server system:
- Install the update-manager-core package if it is not already installed.
- Make sure the Prompt line in /etc/update-manager/release-upgrades is set to normal.
- Launch the upgrade tool with the command do-release-upgrade.
- Follow the on-screen instructions.
Note that the server upgrade will use GNU screen and automatically re-attach in case of dropped connection problems.
There are no offline upgrade options for Ubuntu Desktop and Ubuntu Server. Please ensure you have network connectivity to one of the official mirrors or to a locally accessible mirror and follow the instructions above.
The release notes for the official flavors can be found at the following links:
- Kubuntu https://wiki.ubuntu.com/DiscoDingo/ReleaseNotes/Kubuntu
- Lubuntu https://lubuntu.me/disco-released
- Ubuntu Budgie https://ubuntubudgie.org/blog/2019/03/27/19-04-release-notes
- Ubuntu Kylin http://www.ubuntukylin.com/news/shownews.php?lang=en&id=923
- Ubuntu MATE https://ubuntu-mate.org/blog/ubuntu-mate-disco-final-release/
- Ubuntu Studio https://wiki.ubuntu.com/DiscoDingo/ReleaseNotes/UbuntuStudio
- Xubuntu https://wiki.xubuntu.org/releases/19.04/release-notes