It looks like all "highlevel" gear is marked "cannot be disenchanted".
wod.wowhead.com/items=4?filter=minle=615;cr=166;crs=6;crv=0
And the level 3 Enchanter's study can provide the same enchants as the profession can. There's no special gear to make, and no upgrades to get.
So unless that changes I don't see any reason for having enchanting at all in WoD.
Sure hope that changes before launch.