Well, that's a plan. I've posted elsewhere that I believe Disney inertia will leave Star Tours alone until they have a new "Land" to build adjacent to Muppet Courtyard.
But now, seeing the success of Rogue One, I'm wondering if any of the other SW stuff will actually leave the rest of the park once SWL is built. Will the new Land have a viewing area for a SW fireworks/projection show? Will it have a stage for trotting out the characters or for a First Order show of Force? Will it have a place for SW props and museums and M&G like Launch Bay?
If SW continues to be this popular for the next 6 to 8 years, I don't see anything SW being pulled back or yanked just because there's a dedicated land for it. We're all assuming it will, and the execs may be currently planning on it. But when the time comes and Star Tours and the M&Gs still have long lines... there may be little appetite to pull the plug on them (unless there's a new Land to make way for).