Ubuntu 9:10, known as Karmic Koala, has officially been launched at Ubuntu.
Correction The original story incorrectly identified reviews for the release candidate of Ubuntu 9.10 as being for the final version of Ubuntu 9.10.
It comes in desktop and server editions, which have been getting wildly different reviews.
Reviews on the release candidate of the desktop version are negative, due to the fact you can't run multiple drives with the current code base. This means a netbook user may be happy but a desktop user (my desktop has three hard drives) will not be satisfied at all.
The server version is getting stronger reviews thanks to its support for clouds. By using Eucalyptus the company has a decent cloud implementation that should make it more competitive with Red Hat, at least in Europe. (Canonical offices are close to the European mainland.)
Drop your own experiences with the new Ubuntu into the talkback thread below. We'll be waiting.