Ubuntu 11.10 “Oneiric Ocelot” (release notes) is now available for deployment in the Linode Manager. For help getting started with deploying a distribution, we’ve written a deployment guide that will prove useful. If you wish to upgrade from an older distribution, we’ve written a guide for that process as well.
Canonical, as always, will support Ubuntu 11.10 for only 18 months. Ubuntu 10.04 LTS remains available in the Linode Manager, which will be supported by the developers until April 2015.