Here is the update from the NFL annual meeting in regards to the rule changes for 2019. This was provided courtesy of the NFL communications department.
Approved 2019 Playing Rules from NFL Annual Meeting – Morning Session
Approved 2019 Playing Rules Summary
1. By Competition Committee; Makes permanent the kickoff rule changes that were implemented during the 2018 season.
2. By Competition Committee; Expands protection to a defenseless player.
3. By Competition Committee; Changes the enforcement of double fouls when there is a change of possession.
4. By Competition Committee; Simplifies the application of scrimmage kick rules for missed field goals.
5. By Competition Committee; Allows teams to elect to enforce on the succeeding try or on the succeeding free kick an opponent’s personal or unsportsmanlike conduct foul committed during a touchdown.