Just got the 2020 Certificate Letter via USPS today.

Letter language is the same. Revised Ticket designator reference. As far as I can tell, the zone fares are the same - the Zone Fares insert itself is nowhere as colorful as last year's.

Here's a shot of the T's and C's:



Here's the Zone Fare insert:



Front of the insert has the same language/text as last year.

David