Langman is one of three players missing from the side that won last year's World Cup, along with Maria Folau and Casey Kopua. Mystics captain Phoenix Karaka has not been named due to her recently announced pregnancy.
Mystics pair Michaela Sokolich-Beatson and Bailey Mes have been added despite both in the process of injury recovery. It is unlikely they will feature before the end of the year, should the Silver Ferns even get on court.
Star shooter Ameliaranne Ekenasio remains the team's skipper and will have continued support from vice-captains Gina Crampton and Jane Watson.
The development squad, which will work closely with Taurua and the first team, is headlined by exciting Mystics shooter Grace Nweke.
Both squads will begin camp in October.
2020/21 Silver Ferns Squad - Karin Burger, Gina Crampton, Ameliaranne Ekenasio (C), Sulu Fitzpatrick, Maddy Gordon, Kelly Jury, Claire Kersten, Bailey Mes, Kimiora Poi, Katrina Rore, Shannon Saunders, Te Paea Selby-Rickit, Michaela Sokolich-Beatson, Whitney Souness, Jane Watson, Maia Wilson
2020/21 Silver Ferns Development Squad - Ellie Bird, Aliyah Dunn, Tayla Earle, Temalisi Fakahokotau, Monica Falkner, Kate Heffernan, Jamie Hume, Erena Mikaere, Grace Nweke, Samantha Winders