Looks like the people at Mojang are listening and have added many new updates that will introduce some new interesting features, most notably one we at *DI* have been looking for, increased map height. Looks like the new 1.2 version will change world heights from 128 to 256 blocks high.

Great that this will be supported on an official capacity and we are all looking forward to seeing this on our own servers given the people at Bukkit can release the server update and that our existing worlds can take advantage of this update along with the others.

Follow this link for more details.