NBACentral's post summarized the first point as an emphasis on offensive players using the off arm to push defenders away. The post credits @APH00PS for the clip and was published Sept. 29. It is a short description of the league's material, alongside the NBA's own explanation.
The NBA's official points-of-emphasis page identifies the video as education for players, coaches and officials. Senior vice president of referee development and training Monty McCutchen narrates the examples. Part one addresses off-arm push-offs and screens. Part two covers freedom of movement on the perimeter and in the post, along with straight-line-pathway plays.
The material describes how officials should separate legal contact from an offensive player extending an arm to displace a defender or using a screen to impede a defender's path. That is an explanation of existing officiating standards through examples. The league page does not announce a wholesale rewrite of the playing rules.
The NBA Video Rulebook provides the longer-running reference point for that distinction. Its step-back push-off example says an offensive player may not push off a legal defender and labels the arm extension an offensive foul. Separate screen examples describe illegal screens when the screener moves into a defender's path or fails to leave room to avoid contact.
The practical question is how consistently officials will apply the examples when contact is marginal. The league's video gives officials a common set of situations to review, while players will learn where the boundary sits through actual calls. The emphasis reaches perimeter isolations, post play and off-ball actions.
