Jonathan Majors has provided a new update on Kang the Conqueror in the MCU, which revives one important storyline from WandaVision and Loki. Majors debuted as a variant of Kang, named He Who Remains, in Phase 4's Loki season 1 finale, teasing the eventual appearance of several of his other variants in future MCU projects. The first is set to appear in Ant-Man and the Wasp: Quantumania, the first project of the MCU's Phase 5 that will uncover more details about the Multiverse Saga's new major villain since not much has yet been revealed about Kang the Conqueror.
https://screenrant.com/kang-nexus-being-wandavision-loki-connection/