The biggest most obvious change in this update is the new sky. We're still tweaking to get it looking how we want it to look.
So why bother? There's hundreds of other things you want - why bother changing the stupid sky? Well I'm glad you asked. The old sky was a slow horrible FPS killer. It rendered using two cameras.. which induces a bug in Unity that meant we couldn't (without a bit of hacking around) have refraction effects in game. Everyone should see a nice framerate boost thanks to the sky being replaced. And it renders in a single camera - which means we're free to use the refraction effects again (so expect to see pixelated penises again).
One gameplay change the new sky might have is the with mr moon. Depending on the moon cycle night is no longer pitch black. We think this is a good thing.
There's a few rendering issues that we hope to fix as we go on. One is the tree lighting. Distance trees appear too bright. This is something we've battled with before - and as far as I'm aware it's a Unity3D bug because I've seen it happen before. I'm sure we'll be able to solve it though - so please excuse any issues like this for now. We're working towards making it as perfect as we can.