if u join the game then there should be an option to look at changelogs to see everything about overhaul update........ But to summarize, new maps, revamped maps (not all got revamped though), revamped gui, new type of cosmetic that changes your names color (not in chat, but it changes it when a player gets close to you and sees your name tag/looks at the leaderboard by pressing tab and sees your name), just a lot of new VERY COOL things....... also some stuff got added after overhaul thats cool too