EDIT: I believe this is false information as I searched for other epic items in the database which i know can be disenchanted and they also have "Cannot be disenchanted" in the tooltips. So I "think" the new ZA/ZG epics CAN still be disenchanted.
Original: anyone notice that the new 353 epics has "Cannot be disenchanted" on the tool tips? try to click any 353 items from the home page. not sure if this is intented.