Loving the new board, and enjoying getting to know it and settling in. Brilliant work! Well happy  Don't particularly like the round avatars though, how do I change them back to square? 

ACP -> Customization -> Themes -> right site click on the pencil symbol -> "Custom" tab -> disable "Use Rounded Photos?"

Thanks very much Storyteller, that did the job. The Admin CP is actually much more intuitive and easier to find your way around. I love the new board.

I agree, went back to 3 on a running site after using 4 for a few weeks. OMG, I can't wait to upgrade that. 

They have done a great job on 4.