Ubuntu 14.10 Utopic Unicorn will be officially released on October 23, September 25 the final test version has been released, Ubuntu 14.10 RC candidate version will also be released on October 16, a week after the official release.
While it is not a stable version of Ubuntu 14.10, but for everyday use has been fully used.
So how to upgrade Ubuntu 14.04 Ubuntu 14.10 Final Beta or Ubuntu 14.10 RC version?
This article will tell you upgrade approach.
Canonical already provides a direct upgrade method is very quick and easy. It applies to: Kubuntu, Xubuntu, Lubuntu, Ubuntu GNOME, Ubuntu Mate.
Well, now, first update about the system:
sudo apt-get update
sudo apt-get dist-upgrade
Next, you need to install the core Update Manager:
sudo apt-get install update-manager-core
sudo do-release-upgrade -d
Command to do something to explain: d-release-upgrade command is to help us identify the latest stable version, and -d parameter is meant to include non-stable version.