Heavensward payment

Anyone know when SE will bill us for Heavensward online pre-orders?

I was told by support it would be two weeks before launch.

Edit: Link for proof. http://i.imgur.com/qgbLXsz.png

"NOTE:
The Order Total will not be charged to you immediately.
By proceeding, you will only give us authorization to withdraw the Order Total from the selected payment method.
You will usually be charged ten days before the expected release date of the product, although this may vary."

Does it tell me when I am on the Checkout part when buying.