Tried on a couple of servers to catch some animals, skin them and craft fireplaces to cook the meat on in the "new cooking slots".
On standard made fireplaces using just some sticks and kindle to craft i see no seperate cooking slots, so i tried in a building fireplace and there was two slots for "cooking" neither would accept raw meat and the only place i could place food was in the inventory of fireplace, it then heated it up but if it reached 100 degrees just burned the item.