'The Accountant' sequel, officially titled 'The Accountant 2,' is moving forward with Amazon MGM after initially being set up at Warner Bros. Ben Affleck, Jon Bernthal, J.K. Simmons, and Cynthia Addai-Robinson are confirmed to return, as Artists Equity sets up the sequel. This transition to Amazon MGM as a Prime Video exclusive marks a significant shift for the franchise. The original cast's return for 'The Accountant 2' has been widely reported, highlighting the continuity and anticipated success of the upcoming film.