This season, a few changes will be implemented:
1) the Assistant Manager chip has been removed
2) the Wildcard, Free Hit, Triple Captain, and Bench Boost chips can now be used twice per season — once between Gameweeks 1–19, and once between Gameweeks 20–38
3) defenders, midfielders, and forwards will now receive a capped bonus of +2 points for defensive contributions (if they make 10 or more tackles or ball recoveries in a game, as I understand it)