v6.5 - Dimensional Secrets

v6.5 adds elements that weren't ready for MM v6. This includes the new dimension: The Forgotten Realm. This dimension is almost parallel to the Overworld, and it's very similar to certain aspects like trees and grass. 

Also added was a new variant of wood called Stonewood. Currently there are Stonewood logs, planks, slabs, and stairs. Check the Wiki for more info.