In reply to Rick Gregory.

I have a proposal out to a large public institution too, using WP multisite. My client is one of the professors. My sister is a Lecturer SOE there. I've been able to ascertain the university will NOT upgrade to 5.0 until they have fully tested it and can confirm that 5.0 is accessible to faculty and staff on the editor side, too, and that it doesn't have any other bugs.

That means that any new updates that would also address security issues will not be made, because Automattic has deprioritized accessibility federally required for public institutions.