Early Decision Date Notification

I am thinking about applying to AU ED. However, their website says they don’t notify you by Dec. 31, so I would have to do all of my supplements for my RD schools just in case. Does AU actually notify you on Dec. 31, or is it for the most part before?

Last year, they announced on Dec. 18. For the most part, it’s always before. They use Dec. 31 as the date by which it will FOR SURE be announced but usually, they announce prior to the office closing for Christmas Break.