the article also mentioned these changes all of which are more significant imo
The offense will not be allowed to block below the waist when the block occurs more than 5 yards beyond the line of scrimmage. Additionally, other than the interior linemen, all blocks below the waist must be from the front.
The addition of a 10-second runoff was approved when instant replay overturns the ruling on the field inside of one minute in either half, and the correct ruling would not have stopped the game clock. An example of the enforcement of this rule occurred in an NFL game between the Atlanta Falcons and Detroit Lions last season. The Lions were originally ruled to have scored a touchdown with just a few seconds remaining, but replay showed the player was down before crossing the goal line. After overturning the call, the 10-second runoff ended the game.
Leaping rules on field goals and extra points were adjusted to mirror similar rules regarding leaping the shield on punting plays. It is illegal to leap over the frame of the body of an opponent.
On successful field goals, penalty enforcement will be the same as on made extra points. Namely, all personal fouls and unsportsmanlike conduct fouls by the defending team will have the option to be enforced on the ensuing kickoff.