Just in on the JP forums, the hotfix is for the PS3/PS4 heavensward pre-order issues.

Bad google translation:

Final Fantasy XIV: newborn eorzea HotFixes (2015 / 05 / 21)



■ fixed following bugs.•PlayStation ® 3 version, and PlayStation ® guest book purchased a "final fantasy XIV: blue sky I sugared" 4 Edition PlayStation ® fails version check "Final fantasy XIV: newborn eorzea", when you download "final fantasy XIV: blue sky I sugared" data, enter a product code in the Store, will be able to login.
* This problem is European PlayStation ® have been raised if you download in the Store. There is no impact because Japan and North America began to enter product code, do not.

You are be able to login by * this bug is "final fantasy XIV: newborn eorzea" must be reinstalled. Visit the reinstallation of the client and apologize to you, sorry, but thank you.