Before the start of the regular season, the NFL will send coaches, players and officials an updated teaching video that demonstrates how the new helmet rule should be applied, Chris Mortensen of ESPN.com reports.
According to Mortensen, there have been daily conversations about how the rule has been called during the preseason, and there will be a conference call Wednesday in which the new rule is expected to be a major talking point.
The league expanded its rules on helmet contact in the offseason to make it illegal to initiate contact with the helmet.