** Spoiler Alert **
Wandavision episode 8 was full of Easter eggs and one major reveal
WHITE VISION
Episode 8 was mostly backstory on how Wanda & Vision ended up in the Hex (and how it was created), but in the post credit scene we get a look at SWORD director Hayward's new secret weapon... White Vision. For more info on White Vision see the videos above.
Marvel geeks are assuming that this may lead to a battle between the two vision characters in the season finale & ultimately leading to WandaVision crossover with the Dr.Stange MultiVerse.