Doesn't necessarily mean much, unless they'll be restricted to their own servers which will be in contrary to what everyone expects them to be. Which is in the servers that PC/PS is on.
Like the other user who said it more better than i(which I quoted above)
it's likely only to go up for when we get flooded and have to lock servers. Like Major Patch days or Expac days.
[Unless XBOX is gonna blunder and keep them separate like the few Far Eastern Nations that keep their nations separate from global.]
I guess we'll see if it's some Random New DC how some see it.[Which tbh, I find the most unlikely thing to happen. Like if SE suddenly tried to make 5 Ults in one .X Series.]
Or how most would actually see it, as emergency Congestion servers that only happen to be tested in EAST NA atm.
[But for sure the XBOX angle was something I didn't think off, but that would be equivalent to shooting themselves in the foot. Unless it was a Malicious Compliance from SE against MS if they asked to be separate in their own servers.
Cause that's basically what it's asking for.]