I think that parts 7 to 9 will only feel like part of the saga if they are intimately connected to the films that preceded them. So, it sort of depends on what Lucas provides them and what Michael Arndt, JJ Abrams and the other writers/creators do with it. If they can make meaningful connections to the prior films, then it will be a 9 movie Saga. If they make 3 films that don't really connect, then it'll be it's own new "Saga " or new "trilogy" of whatever you want to calll them. Even if those films are great, they still won't be part of the Saga if they don't connect in meaningful ways to what came before them. For instance, the OT is telling Luke's story which culminates with Vader's redemption. So, it can exist on its own. The PT tells the story of Vader's downfall, and since his story is resolved when Luke redeems him, then that 6-film series is also a unified whole or a connected saga (plus there are other things that unite them like Obi almost killing Vader in #3, & Vader killing Obi in #4, or Palpatine coming to power and then being toppled from power.) Since these story arcs carry through all six films they are united. If the creators of the ST can come up with storylines that carry over from the prior 6 films, then that will bring those new films into the Saga. If they can't, then they won't be. For instance, if they are able to extend Luke's storyline from the OT so that it connects with the next 3 films then that will bring the OT and ST together. If they can somehow connect all the way back to Ep 1, then that would clearly make the whole 9 films one big Saga. All that being said, I think they are really going to have a hard time with establishing those connections. It's not just that Luke (or maybe Leia) needs to appear in the next films. Their stories have to be furthered, and it really seems like ROTJ wrapped up everybody's storylines completely. Luke redeemed his father, Luke and Vader killed the Emperor, the prophecy of the Chosen One was fulfilled, the Empire was destroyed, Vader died, Luke became a Jedi, the identity of the "Other" was revealed, even Jabba's dead . Much of the rebuilding of the Jedi Order and of the Republic and the destroying of the remnants of the Empire was done in the EU, and they said the ST will be set after that stuff in the EU has already occurred, so I really don't see how they're going to do it. In fact, to me, it seems like the novel "Darth Plagueis" is more of an extension of the original Saga than I imagine the ST will be. Palpatine plays an integral role in 1-6, and so the telling of his backstory from the period before the TPM connects with his role in the Saga that ends with his death in ep. 6. And there are other connections. For instance, it is suggested in the novel that the Force created the Chosen One in response to Palpatine and Plagueis b/c what they were doing knocked the force out of balance, and that Chosen One storyline arc reaches its end in 6 when Anakin kills Palpatine. Personally, I don't see a single unresolved storyline that can extend after ROTJ, let alone extending 30 yrs after the end of ROTJ. Hope they're more clever than I am. Or at least that they recognize that they can't connect them and that they shouldn't force what doesn't work and that they should just go in completely new direction with it.