Today's update changes the sheep's behaviour in a couple of ways. 1. When a sheep is close to another sheep but there's a fence or pen between them they will no longer influence each other. You'll notice this mostly when you're trying to herd sheep around the pen and you have some in the pen and some outside, before today's update the sheep in the pen would move around a lot because of the influence from those outside the pen. 2. Sheep will now turn away from pens and fences, in the same way they do with walls. This makes it easier to get the sheep through gates and also means fewer sheep getting stuck in corners. Enjoy! And happy herding!