Remember the pictures of the flying island that Pcgamer got notch to publish?
In an interview Notch did on a Swedish show, he said it is to become Dreamworld.
When sleeping in a bed, you got a chance of waking up in this world filled with islands in the sky.
A follower on twitter suggested this use of them, since notch plan was to push the height limit up, and have the islands above the cloud layer.
- A gold bed, so that the users that want to sleep and not end up in dreamworld can use a regular bed.
-A lapis or glowstone portal.
-Staircase that ends in glowstone at the cloud layer, (maybe even a temple on top?)
-An item that is placed next to the bed, like a light or record that acts like a portal to the dreamworld when you sleep. (Among the ideas, hourglass of soulsand and sand.)
More pictures herehttp://imgur.com/a/cvsYW