4J don't always put all changes on the patch notes. Already I've seen that maps ij item frames now fill the whole block (so you can make huge maps now) amd I think the mining animation has been changed.
Hey, I was chilling out in survival and my brother (split screen) put some thing to smelt in a desert village blacksmith area. It seemed to smelt things twice as fast as normal furnaces. Does making a furnace near lava or in a desert biome make smelting faster?