This is a final reminder for bot-operators and tool-maintainers that starting the week of January 13, we will begin rerouting some page content endpoints from RESTbase to the newer MediaWiki REST API endpoints.
The impacted endpoints include getting page/revision metadata and rendered HTML content. Updated rerouting behavior is also available on the test wiki for any final testing that you would like to perform prior to the rollout.
Although we intend for this change to be backwards compatible, non-breaking and therefore non-impacting, we encourage you to test and raise any final compatibility issues directly on the outstanding ticket in phabricator, or to me (hcoplin@wikimedia.org) directly.
The specific endpoints that will be rerouted are listed below. More information about this change and the RESTbase Sunsetting project can also be found in phabricator.