Niantic is continuing to announce new content and events for Pokémon GO. Read on below to learn more: Gear up for Steel-type Ultra Beasts, Mega Aggron, and Togedemaru with a new event–Test Your Mettle! Trainers, Steel yourselves! The Ultra Beasts Celesteela and Kartana have emerged from Ultra Wormholes all over the world, with Celesteela spotted south of the … Continue reading Full details revealed for the Pokémon GO Test Your Mettle event, which runs from September 16 at 10 a.m. to September 21 at 8 p.m. local time and marks the Pokémon GO debuts of Mega Aggron and Togedemaru