There are a few posts from many years ago saying that Stack Overflow in Turkish was on hold until after Stack Overflow in Portuguese was ironed out, and it seemed like Turkish was one of the next priorities of the Stack Exchange team along with Spanish and Russian.
However, these posts are from 5-7 years ago, SO in Spanish and Russian has already launched, and the latest post I've found from 5 years ago says that it will be a little while before Stack Exchange commits to a new language. Furthermore, there are no proposals on Area51 for Turkish SO.
Is there any update on Stack Overflow in Turkish? Is Turkish SO still on hold or has it been abandoned?