Once T248418 / T100106 are done:
- Update description of https://phabricator.wikimedia.org/tag/kaltura_player/ and set its project description as default
- Archive https://phabricator.wikimedia.org/tag/kaltura_player/ and update its description, and set its project description as default
- Mass-close all open Kaltura tasks at https://phabricator.wikimedia.org/maniphest/query/aCTEvW7XbdgI/#R as declined with an explanation (plus link to more info), plus instructions to file a new ticket if this still happens with the new player.