It is, and I'm not sure if youre under the impression that they will just moderately release dlc or keep it the way it is. But either way, they can modify the game in its entirety if they wish, did you play warframe when I came out? If you play it now its insanely different. That's essentially the plan, but those kind of changes don't happen overnight. Either way, the game is much more interesting to me than riptide. People got way too hyped out about destiny and still need to realize its still in production. Whether we see it soon or not, meh, who knows.