Fridays episode (Chapter 13) is written and directed by Dave Filoni, so I have to think this would be Ahsoka’s live-action debut. The last episode Filoni both wrote & directed was Chapter 5: The Gunslinger, where we got a glimpse of a mysterious figure in the Tatooine desert standing over the body of the mercenary played by Ming-Na Wen. It was assumed that this was Boba Fett, but I personally like the idea of this being Commander Rex. That would allow Finoli to continue the story of Ahsoka-Rex and it also gives a reason to go back to Tatooine in later episodes or spin-off series. There’s not really a reason for Djin to go back to Tatooine if this isn’t the case.