Go Daddy posted a notice at the top of the auctions.godaddy.com page. They will be performing maintenance on Sunday at 1 am Eastern. This should just affect public auctions, so if you have any closing, know that they will be extended.
Auctions will be performing maintenance starting on Sunday, November 13, 2016, 1:00 AM Eastern Standard Time. Maintenance is expected to complete after 6 hours. Any auctions that are scheduled to end during this time will be extended following our maintenance window.
Joe Styler provided more info on Namepros