For those who are swimming or have applied, here are the remaining class dates that the Union has been informed of for 2020 on the Atlas side. (I suspect that there are a similar amount / frequency of classes running on the Southern side as well):
767:
October 5
October 26
November 1
747:
October 12
November 2
More classes could be added in November / December, but I suspect that it may be likely that they slow down through the end of the year. That being said, I'd expect the hiring to resume in full force for 2021.
Best of luck.