The Turkish government decided to stay at the EEST (GMT+3) timezone (daylight saving timezone) from now on; the timezone will be fixed to GMT+3 from now on in Turkey. Is there going to be an update for the timezone file for Linux systems due to this change? When is it going to be published?
As long as it has been decided to stay in current timezone, you can use GMT+3 until getting any update from Turkish officials.
sudo unlink /etc/localtime
sudo ln -s /usr/share/zoneinfo/Etc/GMT+3 /etc/localtime
Good luck!