Four years later, audiences returned to the nation of Wakanda with Black Panther: Wakanda Forever (2022), which serves as the conclusion to Marvel's Phase Four, the first of the fabled Multiverse Saga.

Source: https://collider.com/black-panther-wakanda-forever-streaming-or-theaters/

If before, that could imply that Kang was altering the timeline long before Phase Four.

Source: https://www.cbr.com/ant-man-wasp-quantumania-victor-timely-bring-human-torch-to-mcu/

Marvel Cinematic Universe's Phase Four introduced many exciting elements to the franchise, but for X-Men fans, it has been a series of teasers and false starts.

Source: https://www.cbr.com/storm-entrance-set-up-phase-four-mcu/

Phase Four plans to begin delivering Block 3 to customers in June 2024.

Source: https://spacenews.com/phase-four-demonstrates-maxwell-block-2-thruster-in-orbit/