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.
Players in North America, Europe and Australia can use a code to download the legendary Pokémon Arceus if they missed out earlier in the year! Check here for the codes – you have until the end of the month, so be quick!