Cards in the Drafts, Needs approval, Needs revision and Approved columns can now be dragged up and down, on the planner and in the schedule sidebar. A card moved into another column lands where you drop it, and a dashed outline shows where that will be.
The order is saved for the whole team, so the draft at the top is the one everyone sees first. Scheduled and Posted stay in time order, and new posts still arrive at the top.