Thomas and Friends: The Rise of the Diesels

If a Joe Murray preschool series was 100% official, here is the production about it.

Production
On November 2021, after Let's Go Luna! ceased production and Joe Murray's departure from 9 Story Media Group, Joe Murray will be thinking about working on a preschool series focusing on two best friends which are a dog and a cat.

In Winter 2023, Joe Murray will announce to be returning to both Nickelodeon and Nickelodeon Animation Studio and join with both Little Airplane Productions and Laughing Wild to begin working on a new series for preschoolers called Mack & Annie. The series involves two best friends which are a dog called an American Foxhound named Mack and a cat called a Siberian cat named Annie who go on adventures in their big land. The series will be created by Joe Murray ("Rocko's Modern Life", "Camp Lazlo", "Let's Go Luna!") and Mike Luzzi and developed by Murray, Luzzi, Chris Nee, and Paul Germain. The series will be produced by Little Airplane Productions, Laughing Wild, Joe Murray Productions, and Nickelodeon Animation Studio with animation by Rough Draft Korea. The series will premiere in 2023 on Nickelodeon and Nick Jr.