New Xbox One tech that allows devs to tag any of their content as "optional" to cut down on hard drive space. Examples used in the video are things like removing languages you won't use, and removing single player campaign if you beat it and only play multiplayer.
Small game changer right here. However, part of what he mentions in the video is that "but the Xbox One wouldn't need to download all the 4K textures for FM7 that the Xbox One X would need." I was under the impression that only the Xbox One X console would be able to download those larger files because it is the only console that can do anything with them. Or are they now giving that previously mentioned aspect a name in this video?
EDIT - "Chunks" is not a good name.