Ahsoka episode 5 featured the return of Anakin Skywalker in the World Between Worlds, but Hayden Christensen looks the same—here’s how.

Source: https://screenrant.com/hayden-christensen-anakin-skywalker-ahsoka-star-wars-prequels-comparison-cgi/

Ahsoka may reenter the World Between Worlds, or perhaps the true Force ghost of Anakin will make an appearance to his student.

Source: https://screenrant.com/hayden-christensen-anakin-skywalker-ahsoka-star-wars-prequels-comparison-cgi/

Another possibility is the World Between Worlds realm that seems to be shown in the trailer.

Source: https://screenrant.com/ahsoka-mary-elizabeth-winstead-hera-obi-wan-team/

This has led many fans to expect it to expand on the mythology of the World Between Worlds, but there is no guarantee this will happen.

Source: https://collider.com/ahsoka-star-wars-rebels-world-between-worlds-explained/

Though she rarely faces her evil clones as Link does, she has a significant one in the form of Princess Hilda from A Link Between Worlds, who serves as the monarch of the alternate dimension of Hyrule known as Lorule.

Source: https://gamerant.com/nintendo-characters-evil-clones/