I don’t know what’s going to happen to trap focus on the D800. I was not a Trap Focus user previously, so I don’t miss it. It’s an emotional topic though. Thom Hogan called the change 'egregious' and felt so strongly about it he contacted Nikon directly. This was back in July when he reviewed the D800/E
There are postings in the broader community that discount the Nikon Asia post I cited above. They cite a variety of conversations and letters with regional Nikon Technical Support. For example, NTS USA saying in a Dear John letter five months ago, the focus trap issue had already been raised to Nikon Japan.
That seems to be a common disposition - the issue was raised to Nikon Japan. Some expect the issue may be addressed in a firmware update. At this point, I wouldn’t bet on that.
This doesn't mean that focus priority is not helpful. When we stop demonstrating that taking OOF shots are possible and try to focus, focus priority may still perform well for us. There are photographers/authors who recommend focus priority, an indication they still prefer the results achieved in that mode.