The first full trailer for Thor: Love and Thunder references Thor and Jane Foster's relationship, and even establishes a timeline for when they broke up in MCU canon. Thor: Love and Thunder will see Natalie Portman become Lady Thor, marking not just the character's ascension to hero status but also her return to the MCU. After Thor: The Dark World, Portman was famously reported to have cut ties with Marvel and the MCU, and other than Jane Foster being briefly glimpsed in Avengers: Endgame, this appeared to be true.
However, Portman is set to reprise the role in Thor: Love and Thunder, assuming the mantle of the Mighty Thor in the process. An early trailer for the film showed Portman as Foster wielding a reforged Mjolnir, and the full trailer sees her briefly interact with Hemsworth's Thor. The pair discuss their relationship and touch on Portman's absence, referencing their in-universe break-up.
Related: When Thor: Love & Thunder Takes Place In The MCU Timeline
Thor and Jane Foster's break-up was referenced in passing in Thor: Ragnarok, but the Thor: Love and Thunder trailer mentions it more directly. Exactly what happened to Jane Foster between Thor: The Dark World and Love and Thunder will undoubtedly become clear, but the trailer confirming that the characters will acknowledge their break-up cements its place within MCU canon. Thor detailing the exact time since they last saw one another also seemingly confirms two other details: an approximate timeline for their break-up, and that it was Jane's decision (and not mutual, as he comically insisted to a fan in Thor: Ragnarok).
In the trailer, Jane asks Thor how long it has been since they last saw one another, and Thor answers that it has been "8 years, 7 months and 6
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