Shells?

When watch all gameplay videos including sounds then and now I noticed that while in Updated version the empty shells didn’t eject out of the guns and bounce and roll around on the ground. I know the videos were not final but Is that something that has been taking out? I really hope not. The little details like that was one of the things that made Halo so amazing to me. I can even remember using the sniper to zoom in and read the shells and being in awe in the amount of detail put into something so small. Does anyone know an answer for that yet?