As far as I know, the only time DT has done anything special to mark an anniversary of an album was when they did When Dream and Day Reunite to mark the 15th anniversary of WDADU. Yes, they've done the anniversary tour thing (which has been exhaustively discussed in other threads), but that's a different thing. It doesn't seem like they're into doing the whole "change things up for a single night" thing like they did when MP was calling the shots. After all, they didn't do anything special to mark the 10th anniversary of BC&SL when they played in Switzerland on June 23, 2019 (the 10th anniversary of the release of BC&SL). Did JLB even mention it when they played ANTR?
Admittedly, though, you've now got me wondering what might happen at the October 26 show in Tucson (which will be the 20th anniversary of SFAM's release date).