That picture also confirms what I been suspecting, you can continue to play the game without a physical copy of your game in hand until August 30th.
Here is original post, 5th question asked:
http://forum.square-enix.com/ffxiv/t...l=1#post996799
For those who pre-order, is there any way we can get our full game registration codes early?
We're working to get everything confirmed before making an announcement, but for those who receive their early access codes, we're considering adjusting the early access to include a short period after official service begins. This would help ensure users can play in the event their package is not delivered on time. This may not guarantee players will be able to play the entire time until their package is delivered, but we will do what we can to make the transition to release as smooth as possible.