During a breakdown made by Emergency Awesome it also came to knowledge for Earth616 that WandaVision will have nine episodes, not six, that most of us believed before. Our timeline schedule is also updated and prepared with this data.
It is known that “Earth616” is trying to keep track of when events in the MCU timeline ocurs. Likewise it is for WandaVision, which is still under discussion amongst some fans. So far, there are only theories that the events itself initializes shortly, up to year, after the events of Avengers: Endgame. So according to the timeline of MCU, the initial events probably lands in 2023-2024 MT (McuTime).
According to Collider, WandaVision will be paying homage to virtually every decade of TV sitcoms, but what this really means to the “occuring time” is still unknown.