BeastlyAlien

Hey everyone. Im kinda confused. How do i get the 15gb patch? I preloaded the game digitally about a week ago and everything was fine. then i head about an update that needed to be installed, and that i could do so since i bought it on the Xbox store. If i go "manage game" it says the game is 46gb but when i go to the store it says its 59.11gb. did the 15gb update install automatically or not? Thanks!