List of all new blocks:

A Happy Dragon Egg drops when a player kills Ship-Dragonie.
The Happy Dragon will hatch in 10 minutes, but only if the egg is placed on Crying Obsidian.
After 5 minutes on the Crying Obsidian, the egg will crack slightly - this shows that half the hatching time has passed.

If Happy Dragon Egg is not placed on Crying Obsidian it will never hatch
Ender Dragon Egg and Happy Dragon Egg:

