Steam Pre-order WHEN?

[Warlyx]

There's a page for Heavensward on steam, but no option to pre-order. All it says is that the game will "unlock on the 23rd".

When you pre-order on Steam, you will receive a product registration key code that you may redeem on Mog Station which grants you the following bonuses:

Early Access
Pre-order FINAL FANTASY XIV: Heavensward on Steam and access Heavensward content from June 19, 2015.