The RS Tours are now listing possible travel dates in 2021 and though they aren't booking these tours yet, they are providing a notification service for specific tours. All you have to do is find a tour with dates you'd enjoy (easy to do) and click a "Notify Me" button. This takes you to a simple page where you provide your contact information for that particular trip. It's that easy.
We've already signed up to be notified about a tour to Scotland later next year. I applaud Rick Steves for helping us to think positive as we look forward to safer times in the future. We are ready to go when it is safe to do so!