Now I am relatively new, but I'm pretty sure that haven is getting subtly expanded. (I also asked a few random players.)
Photo: http://cloud-2.steampowered.com/ugc/795190344666201727/B9EBE8D05563DE726...
I swear that there used to be nothing there except a wall. Now there are these two knights in construction armor with hammers. It's located diagonally down in the left corner from the pond in the middle.
It has been there for about a week. Probably more, I'm not counting the time.
We don't know what it will do yet, but we do know it will drive away the peace loving players who consider themselves one with the Snipes away!
Edit: Are we also including the garden? That has been around for a long time. It's just the box and Knights that are new.