The "communicated date" is for ProSeries. That just means Intuit hasn't communicated that the 21st is the date for Lacerte and PTO yet. LOL. 🙂
Like a lot of things 2020, this is a moving target! This is now updated to be 12/23/20 2pm PST for all three Intuit tax platforms (ProSeries, Lacerte, PTO). So it looks like Bill had the best crystal ball answer with "Intuit hasn't communicated that yet."