Earlier this month on the Xbox website players thought that Halo 5 will require 46 GB of space to download. Recently on the revealed box art it will require 60 GB to download on your Xbox One. “Halo 5: Guardians will require approximately 55GB of hard drive space for the complete game. Digital copies will include the full game (~55GB), and disc copies will require approximately a 9GB download for multiplayer map content.”
So if you are one of those fans that are going to be switching your LCE to physical you should rethink that as on launch day physical owners will likely be waiting all day or even all day waiting for an update. I suggest you all to get digital copies.