NCASAUmp
Un-Retired
There was only one rule change that affects adult slow pitch this year. From the USA Softball website (I've bolded the pertinent change):
So now, coaches are allowed to initiate an appeal when the ball is dead.
Once the ball has been returned to the infield and time is called, any COACH or infielder, with or without possession of the ball, may make a verbal appeal on a runner missing a base or leaving too soon on a caught fly ball. No runner may leave a base during this period as the ball remains dead until the next pitch.
So now, coaches are allowed to initiate an appeal when the ball is dead.