Warning! Spoilers ahead.
Star Wars News Net has revealed a leaked concept art of Darth Vader for Star Wars: Obi-Wan Kenobi. It shows the character without his helmet and armor, a bit like in Rogue One.
The site has also shared renderings of Vader’s bacta tank and Vader’s breathing apparatus, based on photos they saw.
All of this suggests that we’ll see Hayden Christensen playing an unmasked Vader, which is good in my opinion. As I said in a previous post, the past relationship between Anakin and Obi-Wan is already well established so I’m not really interested in flashbacks.