Love and Thunder Post-Credits Setup Jane Foster Return - As a Valkyrie
Jane Foster's story seems done, as Love and Thunder sees the hero battle gore and cancer, but there's still a chance she'll return in the MCU.

Although she died at the end of Thor: Love and Thunder, Jane Foster's return to the MCU has been confirmed, which could bring the hero back to life as a Valkyrie. After an absence from Thor: Ragnarok, Natalie Portman reprises her role as Jane Foster in Phase 4 of Love and Thunder, now armed with a rebuilt Quake, as the mighty Thor, a role that gave her a temporary reprieve from cancer. As it turns out, Foster's transformation into the mighty Thor actually metastasized her cancer, leading to the new superhero's emotional death after her battle with God-slayer Gore.
However, not all hope is lost for Jane Foster's future in the MCU, as the end credits scene of Thor: Love and Thunder shows her granted admission to Valhalla. This could mean that one of Foster's most recent Marvel Comics series could come to fruition in the MCU, which could make her an extremely powerful teammate in The Avengers. With Thor's future so uncertain, reintroducing Jane Foster as a potential Thor replacement could be the perfect fit for Marvel Studios.
Love & Thunder's Post-Credits Revealed Jane Foster Has Gone To Valhalla

In recent years, Several afterlife have already appeared in the MCU, including the ancestral plane in Black Panther and the Duat in Moon Knight, so it was only a matter of time before Marvel Studios showed audiences the afterlife of Asgard, Valhalla. Valhalla lore states that only the bravest soldiers, those who lay down their lives in battle, are eligible to pass through the golden gate, which means that Jane Foster was harassed after helping eliminate the Gore threat. was welcomed with open arms, while also bowing to her personal battle with cancer. Even though Valhalla is an afterlife, that doesn't mean Foster can't return to its former glory.
MCU audiences have seen characters return from their respective afterlife worlds before, as T'Challa and Killmonger (and Shuri in Black Panther: Wakanda Forever) only stayed in the ancestral plane before returning It took a short time while Marc Spector managed to get away from Duarte. That means Jane Foster is likely to return, which makes it possible for other Valhalla characters to return as well. While not much is known about who is in Valhalla at the moment, Idris Elba appears as Heimdall, who died in Avengers: Endgame, so it's possible he could return as well.
Jane Foster Could Return To The MCU As A Valkyrie

2019 Clash of the Worlds is a Marvel Comics storyline in which Jane Foster takes over the mantle of the Valkyrie after the legendary Asgardian hero is slain by Malekith and his army. This event happened after Foster returned from Valhalla with the help of Thor and Odin, and after she successfully completed chemotherapy, meaning she was slowly returning to full strength. As a Valkyrie, Foster wields the all-powerful Undrjarn, a device made from shards of Mjolnir that can transform into various types of weapons, making her a very powerful addition to the Marvel roster.
This would be the perfect trajectory for the MCU's Jane Foster, seeing her prove what she's really capable of, earning a superhero moniker without cancer dragging her down. With Thor's MCU future up in the air, Foster as the Valkyrie could be a perfect replacement and traditional hero for the original Avengers. While Thor: Love and Thunder is one of Marvel Studios' most controversial projects, it could have been perfect for creating a very strong future hero for the MCU.