Canonical has released the first of four Alphas of Ubuntu 10.10 Maverick Meerkat. As it has been released just after weeks after the Lucid release, it is not very much different from Lucid from the outside. The only notable change may be the History Tab in the Software Center.
As this is an Alpha, it is considered not safe for use in production machines. Anyway if you want to try it out you can download it from http://cdimage.ubuntu.com/releases/10.10/alpha-1/ and install it.
In case you decided to test it out, do let us know how it feels.
[image credit: Web Upd8]