The "I Can Read" Comics series had a book listed up back in April starring Zipp and Pipp swapping places for a day, persuing the others interest on the advice of Sunny to resolve an argument. We now have a cover for it if you are curious about what kind of art style it will have.
I'll pop the details down below again if you missed the previous post.
My Little Pony: Sister Switch (I Can Read Comics Level 1) Paperback – January 3, 2023
Thanks to Las Noticias MLP for the heads up!