'The Matrix 4' premieres in theaters on May 21st, 2021 - Engadget

1. 'The Matrix 4' premieres in theaters on May 21st, 2021  Engadget
2. Matrix 4 and Flash Release Dates Announced by Warner Bros. - IGN  IGN
3. 'Flash' and 'Matrix 4' Get Release Dates  Hollywood Reporter
4. Warner Bros Sets Release Dates For ‘The Matrix’ Sequel, ‘The Flash’ & More; ‘Akira’ Off Schedule  Deadline
5. The 4th Matrix Will Arrive Before The Flash  Gizmodo
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