These Laws come into force on 1 June 2020. Because of the Coronavirus (COVID-19), the Laws of the Game Competitions which have been suspended because of COVID-19 have the option of completing the competition using the Laws of the Game 2019/20 or adopting the Laws of the Game 2020/21. ‘Friendly/practice/warm-up’ matches in preparation for the restart of the competition are permitted to use the version of the Laws that will be used when the competition restarts, even if these matches are after 1 June 2020.
The IFAB description of the changes found in 2020 are included in the Laws of the Game. A summary of changes and clarifications is available here.