Ealing's departure follows a season in which they finished seventh in Championship 3. York narrowly missed out on promotion via Championship 4, where they finished fourth behind Caledonia Storm, Coventry and Tyldesley.
York's promotion leaves Division 5 with seven teams next season, requiring changes in the playing schedule. Those teams, therefore, are advised not to commit to hotel bookings at this stage; a full list of fixtures will be published when the data system opens for registrations early next month.