Directly from the notice sent by Intuit - AND the announcement prominently displayed stage right of the home page of the forum:

What if my client needs more time past the July 15 deadline to pay? If your client needs additional time beyond July 15 to file, you will need to file an extension. An extension will still give you until October 15, 2020, to file, but your client will need to pay any taxes owed by July 15 or be subject to penalties and interest.