In this case, most likely. They haven't linked 2+ regions since Gold/Silver. Though it's a bit too early to tell whether they're going to link past areas or not. But what we can confirm is that we're getting a new area.
We're just speculating for the hell of it cause we got like 2 seconds and three images of it. We do this every time. This announcement isn't like any other game announcement either, they never show beta artwork like that.