New Features: * list=search: Full text search has been added - both titles and content are now search-able. * list=allusers: Added groups - can be both filtered by a specific group, and shown the groups the users belong to. (bug 10684 by VasilievVV)
Breaking change: * prop=revisions: I removed the redundant pageid= attribute in the <rev> tag - pageid is already given as part of the parent <page> element. (Thx Platonides)
Your help is still needed to improve documentation at http://www.mediawiki.org/wiki/API - each function and parameter needs better documentation, with many simple examples. There is a template to help with the presentation.
As usual, if you notice any bugs -- http://bugzilla.wikimedia.org Awaiting server sync for changes to go live.
--Yurik