You world, which is generated will not have anything new out there to offer on Minecraft Xbox 360 version, but only parts of the world that are not generated will be with new features, enemies and terrain types, which we are all used to on our personal computers at home, easily playing with friends multiplayer.
Xbox on 360 is getting updated more and more
Something like villages and strongholds are what you are about to see and it is new and working in this new version of the game. Playing will still be addictive experience, without mods like on PC with TFC mod manager it still is fun for the players on consoles.
Hunger system is coming in this update, which has been for a long while on other version, so be prepared to care more about the food and shiny pink pigs which will make you go wild for their meat in this game that’s for sure.

