Cue the Ubuntu release parties — Ubuntu 11.10 has arrived. Ars Technica has a very positive summary of the changes in 11.10; Joe Brockmeier's piece of a few weeks back explains the return to Xen to Ubuntu and the introduction of Juju (formerly Ensemble). Asks an anonymous reader: "Any outstanding reasons why I shouldn't upgrade?" YMMV, but as a long-time Ubuntu user, and like many other users, I have mixed feelings about the concerted (and now complete) move away from a conventional WIMP interface to the new Unity. With previous versions, it was possible to choose a "classic" look rather than the default of Unity; now, for good or ill, the left-hand vertical menu is a permanent desktop element. It looks great to me, in the way the Canonical developers intend: as a consistent, replicable, supportable interface to recommend to (for instance) my parents — but I'm used to (and prefer!) more traditional WIMP environments, so at least for now have switched to Linux Mint's Debian Edition.