As many of you may know, MultiContent Revisions are coming soon (October?)
to a wiki near you. This means that we need changes to the XML dumps
schema; these changes will likely NOT be backwards compatible.
Initial discussion will take place here:
https://phabricator.wikimedia.org/T199121
For background on MultiContent Revisions and their use on e.g. Commons or
WikiData, see:
https://phabricator.wikimedia.org/T200903 (Commons media medata)
https://phabricator.wikimedia.org/T194729 (Wikidata entites)
https://www.mediawiki.org/wiki/Requests_for_comment/Multi-Content_Revisions
(MCR generally)
There may be other, better tickets/pages for background; feel free to
supplement this list if you have such links.
Ariel