With so much iron already available though mining, i'm not sure how this will be that much beneficial to MCXBOX unless you don't mine of course of your just lazy lol
It's fun to just build it and see it working, plus if you have several people on your server it could cut out caving times.
Trust me, It's alot of work to build and if you don't build it right you have to tear it down and start all over again. XD
Jungle bioms
Ocelots(cats)
Redstone lamps
Iron golems
Upside down stairs
Iron farms
On the Twitter announcements thread (Pinned in this section) - Post #1789
http://www.minecraftforum.net/topic/1338946-official-minecraft-twitter-feed-jungles-cats-upside-down-stairs-and-more-updated-29-may-13/page__st__1780
Trust me, It's alot of work to build and if you don't build it right you have to tear it down and start all over again. XD