The due date to file FORM GSTR-9, GSTR-9A and GSTR-9C is still 31.08.2019. Chances are very low for date extension. So file it within due date so as to avoid late fees later on.
However, the Due Date for filing FORM GSTR-3B for the month of July 2019 has been extended to 22.08.2019. Notification awaited.