Interesting. Where is this information to be found in official channels?

Ryanair (at the time of writing, 01:45 BST on 12 Sep 2020) is still selling flights from/to Edinburgh to/from Tallinn on 20 Sep, 23 Sep, 27 Sep and 30 Sep.

If you believe this, and i you would like a free rebooking to anywhere on the Ryanair network within 90 days (with no fare difference, according to the email I received), I would recommend booking one of these flights.