Niantic has announced the Pokémon GO Community Days for September 2022 to November 2022.

Save the dates for next Season’s Community Days!

Trainers,
Now that the Season of GO’s final Community Day is behind us, we’d like to share next Season’s Community Day dates!

• Sunday, September 18, 2022
• Saturday, October 15, 2022
• Saturday, November 5, 2022 (Community Day Classic)
• Saturday, November 12, 2022

Community Days aren’t the only events on the horizon—here are the dates for additional in-game events coming in September!

• Saturday, September 3, 2022
• Sunday, September 11, 2022

Stay tuned for more details about September Community Day and beyond!

Source: https://pokemongolive.com/en/post/cd-savethedate-s8/