Some more new rules being tried in the minors:
https://www.cbssports.com/mlb/news/m...-rule-changes/
The Atlantic League, an eight-team independent partner league of Major League Baseball, will experiment with moving the pitcher's mound back 12 inches in 2021, the leagues announced Wednesday. The Atlantic League will also test a "double hook" rule in which the DH is tied to the starting pitcher. Once the starter is removed from the game, the team loses the DH.