The spokesperson said plans were being finalised with clubs and commercial partners, and would be put before the Football Association within the next four weeks.
The changes come amid the women’s domestic calendar growing ever more crowded.
The Women’s Champions League this season expanded from 16 to 18 clubs at the league phase, with Chelsea, Arsenal and Manchester United involved – the first time three WSL teams had reached that point.
Arsenal and Manchester United will play in the knockout play-offs – a new round of games introduced this season – after finishing fifth and sixth respectively in the league.
Next year the number of domestic top-flight games is also set to increase following the expansion of the WSL from 12 to 14 teams.
WSL organisers have confirmed that teams who play in the Champions League will not drop into the secondary domestic cup even if they fail to progress through the qualifying rounds.
BBC Sport also understands that the league phase will still be regionalised, as it is currently, to help clubs with travel time and costs.
Sponsorship of the competition is also uncertain. The deal with current sponsors Subway expires this summer, although it has an option to extend the contract by a year.
