The director of WandaVision, Matt Shakman, revealed in a recent interview that while episode 9 will feature a culmination of sorts, the larger narrative will continue with the upcoming film Doctor Strange in the Multiverse of Madness.
According to Shakman, that particular scene between the two titular characters forms the bedrock for the whole of WandaVision.
But Wanda will continue into Doctor Strange in the Multiverse of Madness, and there’s a lot more to her story to be told, so this is only one part of a very complicated and very rich life.”
Wanda has already been shown to have a dangerous effect on the fabric of reality.