Will I get the expansion pack China Rising? How will I get it

Ok, so i pre-ordered Digital Deluxe BF4, 2 months back. And I recently found out that you can now get China Rising with every pre-order. So will I be getting it too, even though I pre-ordered before the dlc was announced with pre-orders? This is my first digital pre order so I would like to know, how will I get the code for it. By email? Will it be safed to my account and be able to download it right away when it comes out? etc. Thanks