The Billie Jean King Cup Finals will switch to a knockout format this year, with the final taking place in Seville on 20 November.
An extended nine-day event will overlap briefly with the men's Davis Cup Final 8, which begins in Malaga on the eve of the Billie Jean King Cup final.
The International Tennis Federation (ITF) says the aim in revamping the women's event is to “maximise the visibility” and to create a “fortnight of World Cup tennis” in Andalucia.
Great Britain qualified for the Billie Jean King Cup Finals by beating France in Le Portel in April.