So at this time, things can stay as they are since we're late in the cycle, BUT Kavanaugh did not rule out changes down the road as this injunction says nothing about the merits of the case itself.
From my source (a newsy email from WVNN radio, so no link):
"However, Justice Brett Kavanaugh made it clear that this ruling isn’t completely final, only that the order must be blocked for now since the primary election is set to be held on May 24. Kavanaugh wrote, “When an election is close at hand, the rules of the road must be clear and settled.” He also said that this “stay order is not a ruling on the merits, but simply stays the District Court’s injunction pending a ruling on the merits.”
That is more sensible, really. The SCOTUS shouldn’t be weighing in on if districts are “gerrymandered” (it’s always ‘gerrymandering when the other side does it’ is a joke older than the Republican party itself), but instead the sleaziness of any last moment motion that sows chaos and confusion.