Well, I'd say it's pretty close to final but I'm still doing some balancing changes and may tweak some features here and there. I'm pretty sure none of the central pillars will be knocked over but I'm still fiddling with a few of the surrounding features.
I guess it sort of comes down to what kind of things you'll become attached to. We're not completely out of the woods here - got to make use of the pre-final-launch time as much as I can to make the game as good as I can. :)