So much for 'exclusive content'.

So does this mean GMS will get the EMS "exclusive" Supreme Server?

No idea about that but if GMS gets Veracent Castle I bet a lot of people wanting more total stat would start screaming. Also, it's far more likely that Veracent would come first seeing that Supreme may need to be fine-tuned to actually accommodate all of the adventurers.

Edit:

This is CMS ripping off our Enchanted Forest and making the rewards better in case the post above wasn't already credible enough.