I have a 40GB update to Shadow of War in the middle of downloading. I can't find any release notes. I'm in the middle of a game and I don't want anything changed right now so if someone knows were the release notes are, please let me know. Thanks

Are you sure? The game never got a patch. Maybe your installation is missing some files and galaxy tries to download the game again? I would recommend backing up your save files and verify the installation , or if you don't want to download 40gb again just disable auto updates from galaxy and complete the game.