We'll be moving the bug-reduced development branch of MediaWiki into production this afternoon/evening (US time) / late night (Europe). There may be some new bugs that haven't been caught yet, so please give a hoot if you notice anything unusual.
User-visible changes in this round will include:
* Should be faster loading pages with many links.
* Special:Export -- export the source of individual wiki pages, optionally with their histories, in a thin XML wrapper which includes metadata (time, etc). This may be useful for those of you working on automated tools. (There is not yet any comparable import facility.)
* MediaWiki: namespace for adjusting the localization of interface messages without waiting for a new LanguageXx.php file to get installed. Limited to sysops.
A category system is partially in the code but won't be enabled just yet, pending another look over the code.
-- brion vibber (brion @ pobox.com)