Three outs per inning is no longer a strict rule, at least when spring training games start. Managers will have the option to end an inning early if a pitcher has already thrown at least 20 pitches and there is no reliever ready to enter the inning. It’s going to be weird to see an inning end with, let’s say, an RBI double that leaves runners on second and third. But that’s the rule through games of March 13. After that, actual baseball rules will be in effect.
I guess this has already happened at some games. Bases loaded - inning over due to pitch count. Meh.