I guess technically, the Nationals for 2020 are cancelled. The note that they are being postponed means that the 60th Nationals, which were to occur this year will be held instead in 2021.
Good news is they are still running a 3 day Woo show that nationals weekend at Knoxville and paying 50k to win and 3k to start on the last night. The kicker is limiting to 7,000 fans a night but seeing how so many people already have travel reservations I look for those shows to sell out immediately. Better than nothing.