Ubuntu Linux 8.10 release candidate beta version has been released and available for download from mirrors. The final stable version will be released on October 30th, 2008. But, if you would like to test latest version try out Intrepid Ibex RC beta version.
Upgrading from Ubuntu 8.04 To 8.10 beta
To upgrade from Ubuntu 8.04, press Alt+F2 and type in "update-manager -d" (without the quotes) into the command box. Update Manager should open up and tell you: New distribution release '8.10' is available.
Fig.01: Ubuntu Upgrade in action - new distribution release 8.10 is available
Click Upgrade and follow the on-screen instructions.
You can install latest Ubuntu Linux 8.04 under Windows Vista / XP without creating a new parition with a new tool called Wubi. It is a Ubuntu installer for Windows users that will bring you into the Linux world with a single click. Wubi allows you to install and uninstall Ubuntu easily. This blog post covers basic installation:
With the latest release of the popular Linux-based operating system, Ubuntu Hardy Heron, the installation process just got easier for Windows users who wish to try out an alternative to Vista or XP. Even .NET developers who are looking out on trying the Mono project (the .NET platform for Linux-based operating systems) can benefit from it. All this is possible thanks to a little Windows utility called Wubi, which is an installer for Ubuntu.