After the official upgrade to Firefox 9 in Ubuntu 11.10 at the beginning of the month, Canonical announced on January 24th that the Mozilla Thunderbird 9.0 email client is now available on the official software repositories of the Oneiric Ocelot operating system.

All Ubuntu 11.10 users can upgrade now (by running the Software Update app from the Settings icon) their default email client to Thunderbird 9.0, which was officially released by Mozilla at the end of last year, on December 21st, 2011.

The Mozilla Thunderbird 9.0 email client brings improved keyboard handling for attachments, user interface improvements and fixes.

Other Linux users can download the Mozilla Thunderbird 9.0 binaries and source packages for 32-bit and 64-bit architectures right now from Softpedia.

Also, don't forget to visit our always up-to-date Thunderbird Extensions section, for the latest add-ons!