Quote Originally Posted by Tridus View Post
No, Stormblood includes Heavensward. They shouldn't even be selling Heavensward anymore.

You do need to purchase Stormblood if you want to go past level 50 or do any of the new areas.
Now that you mention it, I actually saw a physical copy of Heavensward at the store last week for like five dollars lol. But yeah, just get Stormblood and you're good to go.