With the merge of Gerrit change 216048,[1] the 'generatexml' parameter to
action=parse, action=query&prop=revisions, and
action=query&prop=deletedrevisions is deprecated in favor of a new
'parsetree' prop.
This should be deployed to WMF wikis with 1.26wmf13, see
https://www.mediawiki.org/wiki/MediaWiki_1.26/Roadmap for the schedule.
[1]:
https://gerrit.wikimedia.org/r/#/c/216048/
--
Brad Jorsch (Anomie)
Software Engineer
Wikimedia Foundation