Pokémon GO Fest 2021 Theories Part 3: Team GO Rocket Posted on Pokémon GO will host GO Fest 2021 from July 17th – July 18th this summer. We have been told very little about the event so far, so let's see if we can cook up some theories about what is to come in this blockbuster event. Remember, this is going to be taking place during Niantic's fifth anniversary with the franchise and the overall 25th anniversary of Pokémon as an IP. I believe we can expect some truly special releases. Here are my predictions for Team GO Rocket that we will see released during GO Fest 2021.