The 5th, and largest, set for the My Little Pony CCG is set to come out on August 28th. Titled Equestrian Odysseys, it adds dual-color cards, single-color problems, six new keywords, and new Super and Royal rares.
There will also be two new Theme Decks. One will have the first card released of Octavia, while the other will contain an orange Derpy (called Muffin Mare in the game, but we know better.)