The official title for The Matrix 4 has been revealed, and it may hint at how two characters will make their return.
Shunika Terry, who worked as a makeup artist on the film, posted an image on Instagram of the wrap gift she received after filming ended. Nerding Reviews posted a screenshot of the gift on Twitter, along with the film's possible title -- The Matrix: Resurrection. If true, this would keep in line with the sequels' naming convention, as evidenced by The Matrix Reloaded and The Matrix: Revolutions.
The title may also hint at the "resurrection" of Neo and Trinity, as both Keanu Reeves and Carrie-Anne Moss are reprising their roles for the sequel. During the events of The Matrix: Revolutions, Trinity died during an expedition to the city of the machines and Neo sacrificed himself in a final battle with Agent Smith.
source:
https://www.cbr.com/report-matrix-title-plot-details/