You Season 3 filming is about to be underway, and the creators have announced it will air in 2021. Season 2 came out 2019 near Christmas, and You executive producer Sera Gamble said the idea was to do the same for this years Christmas, but 2020 had other ideas.
But the good news is after the delays in being able to film, November this year the cast of You will be back to film the third season.
You writer Caroline Kepnes confirmed the news on twitter saying,
Even though we all would have wanted the filming to start sooner, one person who will be very happy to have the extras time off is the star Penn Badgley, after he and his wife welcomed their first child on Sunday 20th of September.