This seems to be the major rumor this month: that Episode 9 will be "the last" Star Wars film, something gleaned from interviews from Richard E. Grant and Adam Driver.
I'm thinking that it's probably a mistake, and that they meant it's the last in the current trilogy (or maybe the last of the "episode" films).
Alternatively though, it does seem that Disney is focusing more on expanding the franchise to television (Beyond animation that is) With the Mandalorian and Cassian shows....and we haven't had any word on any more spin-offs, or any further news on the Rian Johnson and GOT writer's films for quite a while.