They should add some kind of bone block that can be hoed and planted on. It acts exactly like dirt, except crops grow 3 times faster on it. Saplings can be also planted on it, and they also grow faster. The crafting recipe is 9 bones. You can break it with your fist and it will drop, but using a pickaxe is faster. If you bonemeal a crop/plant, it gets automatically full grown. Nether wart can also be planted on it.