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You can now place all raw ores into the world as blocks.
All stone types in the world break in stages if not harvested with a strong enough tool.
Yes sir! Andesite & Diorite too. All of them :) Go see for yourself!
Stones drops lesser (smaller) stones & shards when harvested with a primitive tool.
Coal & Iron Ore now drop dust if harvested with a primitive tool.
All Loose blocks & other vanilla "aggregate" blocks have their loose slab alternatives now.

"One does not simply walk into the mountains and mine iron ore with a stone pickaxe." -Avernite