Kumail Nanjiani is joining the cast of 'The White Lotus' for season 4, along with other new additions including Max Greenfield, Chloe Bennet, Charlie Hall, and Jarrad Paul. There is uncertainty surrounding Helena Bonham Carter's involvement, with some reports stating she has joined the cast, while others indicate she has dropped out and been replaced by Laura Dern. The cast for season 4 is still taking shape, with various outlets reporting different updates on the lineup.