From pausing the Battle League due to cheaters, false violation strikes, and Wayfarer rating issues, the biggest threat to many players is the move away from 32-bit Android devices. A lot of the good work by Niantic being undone is highlighted here.
New Lure items are the key to the location-based evolution Pokémon! Details for the Detective Pikachu Movie event have also been unearthed by a dataminer.