India lost to New Zealand in the 2019 semifinal but beat them earlier in this edition in Dharamsala.
Boult, Williamson, Neesham, fast bowler Tim Southee and wicketkeeper-batsman Tom Latham form a strong core of World Cup veterans but the squad also includes six players looking to make their debut at the 50-over tournament.
Boult gave up his New Zealand contract last August to spend more time with family and continue playing franchise cricket around the world.
With the win, Royals broke the jinx of not having previously beaten the Hardik Pandya-led side in three outings
Siraj went past New Zealand's Trent Boult and Australia seamer Josh Hazlewood to become the top-ranked ODI bowler for the very first time.
Pollard is one of the four West Indies players, including white-ball captain Nicholas Pooran and veteran Dwayne Bravo, to join MI Emirates for the six-team tournament beginning in January next year.
The 33-year-old left-arm paceman recently had been in discussions with national cricket officials about the increasing burden of touring overseas with a young family at home.
New Zealand have included five players who can bowl spin, including uncapped 21-year-old Rachin Ravindra
Kane Williamson's team will draw inspiration from their edge over India in global tournaments in recent years.
Sehwag, who redefined the art of opening batting in Test cricket, feels that Rohit's qualities and recent form at the top of the order certainly makes him a candidate to succeed in England this summer.