I think it will probably just end with Obi-Wan going back to Tatooine looking after Luke. Or it could even end with ANH starting. Imagine Season 1 takes place 10 years prior to ANH and then towards the end its a time jump to 9 years later and it just plays the first few moments when Obi-Wan sees Luke being attacked. It would be crazy if Obi-Wan hears a Tusken call then he does the Krayt dragon noise and we see a Deaged Mark Hamill laying on the ground. It cuts to Obi-Wans face then it ends! It would be so cool!