The Game launcher for FF-14 is now available for Update! It's a quick download. After entering your password to play your game and accepted the EULA you should see this message if you have entered your code (and code of codes) correctly:
http://www.reddit.com/r/ffxiv/comments/1kvjrn/this_is_how_to_confirm_you_have_properly_entered/
Now we just have to wait until early Saturday morning.