With one exception 'The one exception is for if the catcher has the ball and is blocking the runner's path to the plate'. Rule 7.13....How is this going to change the game..
Runners can’t lower their shoulders into catchers or push them with their hands, elbows or arms. According to the announcement, the rule “does not mandate that the runner always slide or that the catcher can never block the plate. However, runners who slide and catchers who provide the runner with a lane to reach the plate will never be found in violation of the new rule.”
From the sport section of the news....