All 20 teams of the two divisions of the WSL contest the competition - the largest field in the history of the cup.
Before the competition, only Manchester City and Arsenal had won the cup in the previous six seasons it was contested in.
After a one-year experiment with a pure knockout formula, the WSL Cup returned to a format featuring a group stage.
Another new implementation for the season was an automatic penalty shoot-out for all games tied after 90 minutes, with a bonus point awarded for the team who emerged victorious afterwards.
[1] After the group stage, the remaining eight teams will contest a non-seeded standard knock-out format as in the 2015 season.