A fifth 50th anniversary set will be released on June 4, 2019. The "4 Kid Favorites: Scooby-Doo! Summer Break" set will be a quadruple-feature film collection again, comprised of Monster of Mexico, Zombie Island, Aloha and Camp Scare. I wish they would have chosen better films, or even a better theme, as Zombie Island and Monster of Mexico do not fit this theme at all.
This 2-disc set can be pre-ordered now on Amazon.