How to upgrade from Xubuntu 12.04 to Xubuntu 12.10
If you want to upgrade the Xubuntu 12.04 into the newer Xubuntu 12.10, you can do this easily. The main thing is you will need a good internet connection to handle the download. I am not sure if it is necessary to upgrade the LTS version (Xubuntu 12.04) into Xubuntu 12.10 but in case you want to, you can do the following steps.
Check list:
1. Make sure all your data have been backed up.
2. Enable all the official repository
3. Enable the update notification on the Update Manager. To do this, simply open the Update Manager and change the update settings and enable the notification for any new version available. You can read the details here.
sudo do-release-upgrade
Make sure you have a fast internet connection since this process needs to download huge packages from the internet. And be patient :)