How soon is the Craft team planning to upgrade to the latest version of Redactor? Redactor version 10.0 introduced some breaking changes and new formatting options, which are not backwards compatible.
The Craft docs link to Redactor V10 docs, which don't apply to Craft's version (9.2.6), and I can't find any archived copies of Redactor's docs, so... while not quite a showstopper, it's a bit inconvenient.