We plan to move to the new schema for xml dumps for the February 1, 2020 run. Update your scripts and apps accordingly!
The new schema contains an entry for each 'slot' of content. This means that, for example, the commonswiki dump will contain MediaInfo information as well as the usual wikitext. See https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/master/docs/... for the schema and https://www.mediawiki.org/wiki/Requests_for_comment/Schema_update_for_multip... for further explanation and example outputs.
Phabricator task for the update: https://phabricator.wikimedia.org/T238972
PLEASE FORWARD to other lists as you deem appropriate. Thanks!
Ariel Glenn