Draft Hirsute Hippo Release Notes
Introduction
These release notes for Ubuntu 21.04 (Hirsute Hippo) provide an overview of the release and document the known issues with Ubuntu and its flavours.
Support lifespan
Ubuntu 21.04 will be supported for 9 months until January 2022. If you need Long Term Support, it is recommended you use Ubuntu 20.04 LTS instead.
New features in 21.04
Updated Packages
Linux kernel 
tbc
Toolchain Upgrades 
Probably mention 
Python and 
ruby and 
perl and PHP.
Security Improvements 
nftables is now the default backend for the firewall.
Ubuntu Desktop
tbc
GNOME 
New things here!
Updated Applications
- Firefox
- LibreOffice
- Thunderbird
Updated Subsystems
- PulseAudio
- BlueZ
- NetworkManager
- etc
Ubuntu Server
Noteworthy changes
Nothing yet.
OpenStack
tbc
Kubernetes
tbc
Platforms
Cloud Images 
tbc
Raspberry Pi 
tbc
s390x
tbc
Known Issues
As is to be expected, with any release, there are some significant known bugs that users may run into with this release of Ubuntu. The ones we know about at this point (and some of the workarounds), are documented here so you don’t need to spend time reporting these bugs again:
Linux kernel
Nothing yet.
Ubuntu Desktop
Nothing yet.
Ubuntu Server
Nothing yet.
Platforms
Cloud Images
Nothing yet.
Raspberry Pi
Nothing yet.
s390X
Nothing yet.
Official flavours
The release notes for the official flavours can be found at the following links:
- Kubuntu Release Notes
- Lubuntu Release Notes
- Ubuntu Budgie Release Notes
- Ubuntu Kylin Release Notes
- Ubuntu MATE Release Notes
- Ubuntu Studio Release Notes
- Xubuntu Release Notes
More information
Reporting bugs
Your comments, bug reports, patches and suggestions will help fix bugs and improve the quality of future releases. Please report bugs using the tools provided. If you want to help out with bugs, the Bug Squad is always looking for help.
Participate in Ubuntu
If you would like to help shape Ubuntu, take a look at the list of ways you can participate at:
More about Ubuntu
You can find out more about Ubuntu on the Ubuntu website.
To sign up for future Ubuntu development announcements, please subscribe to Ubuntu’s development announcement list at: