Last year, a lot of shows announced national tours such as An American in Paris, The Curious Incident of the Dog in the Night-Time, Finding Neverland, Fun Home, Gigi, Honeymoon in Vegas, The King & I, On the Town, and Something Rotten! Six of them are still happening.
This year, the only shows that have officially announced national tours that seem likely to be happening are Aladdin, Hamilton, School of Rock, and Waitress. Allegiance and Spring Awakening may have announced tours, but I think both of those are going to be real longshots.