Lauren Bell leads the pace attack with Lauren Filer and Issy Wong, while all-rounders Dani Gibson and Freya Kemp offer seam-bowling options.
Leg-spinner Sarah Glenn, a recent mainstay of England’s T20 squads, was not considered for selection as she is recovering from a broken finger and has not played this season.
England start their World Cup campaign against Sri Lanka on 12 June at Edgbaston.
They play white-ball series against New Zealand and India before the World Cup.
The T20 squads are the same as for the World Cup, while wicketkeeper Kira Chathli and all-rounder Jodi Grewcock earn their first call-ups for the one-day internationals against the White Ferns.
England T20 squad: Nat Sciver-Brunt (captain), Charlie Dean (vice-captain) Lauren Bell, Alice Capsey, Tilly Corteen-Coleman, Sophie Dunkley, Sophie Ecclestone, Lauren Filer, Dani Gibson, Amy Jones (wk), Freya Kemp, Heather Knight, Linsey Smith, Issy Wong, Danni Wyatt-Hodge.
ODI squad v New Zealand: Nat Sciver-Brunt (captain), Em Arlott, Lauren Bell, Alice Capsey, Kira Chathli, Tilly Corteen-Coleman, Sophie Ecclestone, Lauren Filer, Mahika Gaur, Dani Gibson, Jodi Grewcock, Amy Jones (wk), Freya Kemp, Heather Knight, Emma Lamb, Linsey Smith, Issy Wong.