MediaWiki 1.4beta2 is an experimental release, to help flush out remaining major problems in the code prior to a final public 1.4.0 release. It is not recommended to use this beta on a public site unless you're familiar with MediaWiki innards and are willing and able to help diagnose and fix problems that come up. All beta1 users should upgrade as soon as possible.
This release fixes separate input validation issues with image gallery rendering and PostgreSQL. Other fixes include Recentchanges in PHP5, whitelist-edit mode, table prefixes, page renaming, and other issues. Additionally, startup time for cached page views is slightly faster.
Full release notes:
Wiki admin help mailing list:
Low-traffic release announcements mailing list:
Bug report system:
Play "stump the developers" live on IRC:
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