There wasn't any elaboration on Neil Lamont's part regarding exactly what was in the works for Tatooine -- but we can certainly speculate. It's possible that there were some abandoned ideas for the desert planet in the upcoming Boba Fett movie... but given the status of things, the stronger bet is that Lamont is referencing the much-discussed Obi-wan Kenobi solo adventure. We've been hearing talk about that potential project for years, with the idea being that it would follow Kenobi (played by Ewan McGregor) in the years after the events of Revenge of the Sith. This would specifically place him on Tatooine -- where he stayed so that he could keep an eye on young Luke from a distance. Not much has been officially said about the potential film, but it's believable that there might have been discussions about what we might see from Tatooine.