NFL owners have made some temporary changes to rules, which could become permanent a year from now. For the 2016 season, two unsportsmanlike conduct penalties will result in an ejection, and a touchback on a kickoff will result in the offense starting at the 25-yard line, instead of the 20-yard line.
The automatic ejection rule would not have actually had a huge impact last year. I believe two people total would have been ejected under the rule. There was discussion about Odell Beckham Jr. repeatedly going after Josh Norman, but this new rule would not have applied because OBJ was flagged for unnecessary roughness, not unsportsmanlike conduct.