There was and probably still is some fixed tat on the huge dead tree above Westward Ha.
It is a simple matter to find another tree and put your own gear around it so you can rap in.
I don't think the GCC or the Preserve will be considering placing bolts on Millbrook, because:
1. There is no need for it.
2. It would violate the spirit and tradition of Millbrook. This cliff isn't the Trapps. It sees a fraction of the traffic and part of its atmosphere comes from the almost total lack of fixed gear on the cliff. There are no bolts on Millbrook, and I think most of the people who climb there would agree there should not be any.
3. I would imagine that putting in a bolted anchor there would set off a full-on bolt war, the likes of which hasn't been seen in the Gunks for decades. Those bolts would be chopped, you can count on it.
Edited to add:
4. The Preserve may not even have the right-- they own a portion of the land above the cliff (Minnewaska owns the part atop Westward Ha, I believe), but most or all of the cliff face is private property, if I'm not mistaken.