Suzie Bates, Sarah Tsukigawa and Katey Martin will travel to England with the White Ferns for the tournament starting on June 11.
Bates and Tsukigawa have become increasingly important members of the side.
Bates, the immensely talented all-rounder, starred at the world cup recently when she smashed a New Zealand record 168 off just 105 balls, while Tsukigawa is a calm presence in the batting line-up and a handy bowler.
Martin is a tidy batsman and the back-up wicketkeeper to Central's Rachel Priest.
The three new caps in the White Ferns are Saskia Bullen, Victoria Lind (both Auckland) and Sian Ruck (Wellington), replacing retired captain Haidee Tiffen, the unavailable Beth McNeill and Abby Burrows.
Left-arm orthodox spinner Bullen, who conceded a little more than three runs an over in domestic cricket last summer, would give the team extra bowling options, White Ferns coach Gary Stead said.
"Given that we have two off-spinners, we feel Saskia will add balance to the side. She's a very accurate bowler."
Lind is a right-hand batsman and wicketkeeper, whose State League record this season included a high score of 91 along with five catches and three stumpings.
Stead expects left-arm pace bowler Ruck to bring a distinctive edge to the New Zealand attack.
"We saw only one other left-arm seam bowler at the World Cup in Australia, so Sian will give us a point of difference. She's a quality bowler and has worked hard to get into the side."
Aimee Watkins (nee Mason) replaces Tiffen as captain.
Stead said he was confident about taking a well-structured side to the tournament.
"We have a good mix of containing bowlers and alternative options with the ball and experience-wise there are some really sound heads."
The White Ferns leave at the end of May, travelling first to Brisbane to play three warm-up twenty/20 games against Australia.
The team travels to England on June 4 and will be based at Taunton, where all matches other than the semifinals and final will be played.
The White Ferns play warm-up games against England and India on June 8 and 9, and meet Australia in the opening round of the tournament on June 12.
The women's world twenty/20 championship features eight teams and is played the same month as the second men's tournament, also being hosted by England.
