Will it be Xbox One X enhanced?
Do some digging. Their open position sections explicitly say they're looking for people skilled with Unreal Engine 4. UE4 can run easily on the PC, regular Xbone, and regular PS4. It's probably not going to be made for the next-gen console and doesn't need an enhanced edition.
Also I hate to burst people's bubble, but nowhere in any of the official statements did they say it's going to be a first-person shooter. Considering the paucity of FPS MMO's, it's much more likely going to be a third person shooter, especially if it's also coming out for console.