Ubuntu 23.04 officially released

Ubuntu 23.04 "Lunar Lobster" is the latest short-term support release of the Ubuntu operating system, which will be supported for nine months until January 2024. If you need long-term support, it is recommended to use Ubuntu 22.04 LTS instead.

Linux kernel

• Ubuntu 23.04 features the new Linux 6.2 kernel.

Notable Ubuntu kernel features:

• Support for building and running out-of-tree Rust modules with general-purpose and low-latency kernels
• Newer LSM stack and AppArmor patchset

Notable upstream kernel features:

• Provides a performance boost for older Intel Skylake CPUs with Call Depth Tracking
• Supports Intel Arc Graphics DG2/Alchemist
• New Intel TDX Driver
• Supports Sony DualShock 4 gamepad
• Updated zstd compression code
• BPF improvements
• New hardware support, various performance and security improvements

systemd v252.5

• The init system has been updated to systemd v252.5

Toolchain upgrade

• OpenJDK

  The default Java runtime and JDK have been updated to OpenJDK v17, Java 17 being the latest LTS release.

• .Net

  Added .Net v7 (7.0.105) runtime and related packages. The .Net v6 packages are updated to the latest monthly version 6.0.116.

• golang

  The Go language compiler has been updated to v1.20, the latest upstream stable release.

• Rust

  The rustc compiler was updated to v1.67, and the cargo package manager was updated to 0.68.

• Python

  Python has been updated to v3.11

• debuginfod service

  During this cycle, we have done a lot of work to improve our debuginfod service.

  • The service now indexes and provides source code for quite a few packages. This means that users won't need to manually download the source code for packages, or fiddle with GDB's dir or set substitute-path commands. Source code acquisition will be done transparently by the debugger, which will save a lot of time.
  • The service is now able to index and serve debug artifacts from private PPAs. Currently, it only indexes ESM PPAs.
  • The speed at which the service indexes new ddebsand source code has been improved.

• Ruby

  Ruby has been updated from v3.0 to v3.1

security improvement

• The ca-certificates package has been updated to version 2.60 of the Mozilla CA bundle.

Base System

Netplan v0.106 1

• When using match.macaddressto match (physical) interfaces, the behavior has changed slightly, using PermanentMACAddress=match instead of simple MACAddress=match , which may affect interface matching in some containers or virtual machines.
• Implemented a new netplan statussubcommand to query the system's current network status.

Free Desktop

• new installer
  • The default Ubuntu desktop installer is now a subiquity-powered Flutter app packaged as a snap.
  • Minimal installs are now faster than full installs, which was not present in the old installer
  • Install available security updates on the target system
  • In case of problems with the new installer, the legacy installer will still work.
• GNOME
  • GNOME has been updated to include new features and fixes in the latest GNOME 44 release.
• Updated Ubuntu font
• updated the app

  • Firefox 111

  • LibreOffice 7.5.2

    LibreOffice is now available on RISC-V

  • Thunderbird 102.10

Download: https://releases.ubuntu.com/lunar/

More details can be found at: https://discourse.ubuntu.com/t/lunar-lobster-release-notes/31910