I havnt played odyssey or valhalla yet but in origins and a few games prior manual saving hasnt really been a thing. This hasnt mattered until the new xbox's, I found out today that if your Series X or S crashes you lose all your progress for the day. My best guess for why is the new quick resume feature, with the game being paused between sessions instead of closed it doesnt seem to update the local save file. When my console crashed it went back to my save this morning 8+ hours ago after I put a full day into it. The cloud should have been further along but I had no way to force the game to update to the cloud.
In short, I hope odyssey, balhalla or future games have manual saving again because it sucks to lose a whole day of gameplay.