Masi will be replaced by Eduardo Freitas and Niels Wittich, and a series of new structures, including a stand-alone race control unit.
The current 1.6-litre V6 engines will be retained in F1's engine regulations for 2026, but the MGU-H component will be removed.
This is the first Williams F1 car to be built under Capito's direction, who has been hard at work rebuilding the team.
The points system has been changed, with the top eight drivers now receiving points instead of just the top three finishers previously.
Lando Norris finished the 2021 season for McLaren racing with four podium finishes and a first pole position.
The Sakhir-based circuit first hosted Formula One in 2004, and has since provided some thrilling racing action.
Zhou, 22, has joined Alfa Romeo for the upcoming season, making him the first Chinese driver in Formula One history.
Vettel, who is also a director of the Grand Prix Drivers' Association, has thrown his support behind the embattled Australian.
The Silverstone-based team, which is entering its second season back on the Formula One grid, unveiled the AMR22 in an online launch.
By the time they get to the first race of the season in Bahrain, the car unveiled won't look very much like this, said Team Principal Christian Horner.