Ubuntu 22.10 is now available for download and install. If you have Ubuntu 22.04 and want to upgrade to 22.10, then follow this article. First you need to install all pending Ubuntu 22.04 updates. Open the terminal application (ctrl+alt+t) and run below commands one by one.
sudo apt update
sudo apt upgrade
sudo apt update && upgrade
And restart your system if needed and requested. Run same above commands 2 to 3 times to install all the available Ubuntu 22.04 update.
After that open the software & Updates from the show applications menu. Just search software & Updates for easy find.
Click the Updates tab and set Notify me of a new Ubuntu version to For any new version. And click the close button.
Now open the Software Updater app to check for updates. Click the show applications and search for Software Updater.
Now click the Upgrade button and finish the update process.
If you still not received that upgrade window , then in the terminal run below command.
sudo do-release-upgrade -d
Note: Do not close or cancel the upgrade process before complete. It may broke the system.