From LRM Online:
“It was only a matter of time for this deal to get done. We here at LRM can safely say that Hayden Christensen will be reprising his role as Anakin Skywalker for the upcoming Disney+ Kenobi series. Our source shared with me that the deal is done and Hayden Christensen will be coming back to the Star Wars franchise! The hope was to have the deal done and announce it for Star Wars Celebration. With Star Wars Celebration on hiatus until 2022 this news will be announced at a later date closer to the beginning of filming.
The biggest news from my source is Hayden is casted as a regular so that means we will be seeing Anakin in more than just a cameo appearance. During early parts of negotiations the role started out as just a cameo appearance. But the growing love of the prequel trilogy and the popularity of The Clone Wars, the role of Anakin has become a bigger part of the Kenobi storyline. There have been multiple theories of how Anakin would be coming back in the Kenobi series, since at the current timeline of the story he is currently Darth Vader. While the overall consensus is that we would see Anakin in some sort of dream sequence that Obi-Wan would have we could also see Anakin in Kenobi’s trials to learn how to become a Force Ghost.
The Disney+ Obi-Wan Kenobi series is scheduled to start production sometime in early 2021. Ewan McGregor is set to reprise his role as Obi-Wan and Deborah Chow will be the showrunner for the six-episode series. […]”