Google Blog – 11.8.22
At the beginning of 2022, we announced a new user interface and a customizable, integrated view for Gmail, bringing critical applications like Gmail, Chat, and Meet in one unified location.
Starting this month, this user interface will become the standard experience for Gmail, with no option to revert back to the “original view.” With the new UI, users are still able to change their Gmail theme, inbox type, and more through quick settings.