According to a known Star Wars leaker who goes by @DanielRPK, a casting call has been put out for an actor to play a young Luke Skywalker in Disney Plus’ Obi-Wan Kenobi series, which was confirmed this past summer. This was reported in his Patreon.
I’m not sure that this should surprise any Star Wars fan worth their salt, because having a young Luke seemed pretty much unavoidable to me considering the subject and setting of the Kenobi series, which is said to take place after ROTS, but before ANH, so I’d imagine we’d be seeing a Luke that was about the same age as Anakin was in TPM.
It just makes complete sense to have a young Luke on this show considering that Kenobi’s main charge was to keep him safe. We also know that based on conversations between Luke, his Uncle and Aunt, and Obi-Wan himself, that “Old Ben” had interacted with the boy and the Lars family at some point in time, so the two would have met before their fateful meeting in ANH.
Stay tuned for more as details are released.