The number of women in federal cabinet will at least double when Prime Minister Malcolm Turnbull announces a new-look ministry designed to heal the bitter divisions of last week's coup.

The reshuffle has emerged as Mr Turnbull's first major test as he seeks to shape a strong new team from the wreckage of the Abbott government less than a week since he took over the top job.

While Mr Turnbull has to balance many considerations and interests in assembling the new frontbench, it's understood he has prioritised the promotion of women.