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January 10, 2007

MediaWiki 1.9.0 is the quarterly release snapshot for Winter 2007. While the code has been running on Wikipedia for some time, installation and upgrade bits may be less well tested. Bug fix releases may follow in the coming days or weeks.

MediaWiki is now using a "continuous integration" development model with quarterly snapshot releases. The latest development code is always kept "ready to run", and in fact runs our own sites on Wikipedia.

Release branches will continue to receive security updates for about a year from first release, but nonessential bugfixes and feature development happen will be made on the development trunk and appear in the next quarterly release.

Those wishing to use the latest code instead of a branch release can obtain it from source control: http://www.mediawiki.org/wiki/Download_from_SVN

1.9 includes a number of compatibility fixes since 1.8 as well as many bug fixes and some new features, so all users who can run PHP 5 are strongly encouraged to upgrade.

There are no changes from 1.9.0rc2 to 1.9.0 final except the version number.

Full release notes: http://svn.wikimedia.org/svnroot/mediawiki/tags/REL1_9_0/phase3/RELEASE-NOTE...

Download: http://sourceforge.net/project/showfiles.php?group_id=34373

MD5 checksums: cb58560858e2b85ac7b94097ad3e4531 mediawiki-1.9.0.tar.gz

SHA-1 checksums: c60e212ae5c02501405d91014db6c53499fafa39 mediawiki-1.9.0.tar.gz

Before asking for help, try the FAQ: http://www.mediawiki.org/wiki/Manual:FAQ

Low-traffic release announcements mailing list: (Please subscribe to receive announcements of security updates.) http://lists.wikimedia.org/mailman/listinfo/mediawiki-announce

Wiki admin help mailing list: http://lists.wikimedia.org/mailman/listinfo/mediawiki-l

Bug report system: http://bugzilla.wikimedia.org/

Play "stump the developers" live on IRC: #mediawiki on irc.freenode.net

- -- brion vibber (brion @ pobox.com / brion @ wikimedia.org)