So while we don't yet know what we're getting, we now know that we're definitely getting it. The whole thing is a comedy of frustration, and a Mewtwo day would at least give us an opportunity to get around it. A Mewtwo day would also serve as a kind of low-key introduction for Deoxys, which is likely to take Mewtwo's place as the EX Raid Pokémon. I wouldn't expect to see that for a week or so after a potential Mewtwo day, however, when the next round of invites went out. Mewtwo day would be an event, that you can bet on: trainers would turn out in droves for the chance to finally finish their Gen 1 Pokédexes.

Source: Forbes September 02, 2018 13:52 UTC