The pre-orders for the digital download version of Heavensward began today on PlayStation®Store in North America. However, due to a technical issue, players who upgraded from the PS3™ version of FINAL FANTASY® XIV: A Realm Reborn to the PS4® version are currently unable to purchase the Heavensward expansion pack on the PlayStation®Store. We are working closely with Sony Computer Entertainment America to resolve this issue, and new updates will follow as additional information becomes available. PlayStation®3 users, and PlayStation®4 users who did not participate in the PS3->PS4 upgrade campaign, are not affected by this issue.
We apologize for the inconvenience and thank you for your understanding.