Just read in another thread, in the dining reservation forum, that someone called 3 times and spoke to 3 different CM's about BOG FP+ for December. Each CM had the same story - people have been able to "trick" the BOG FP+ page into giving them a time by using their reservation number, even though they never received the invitation, but this has changed and that BOG FP+ is now "truly invitation only for December." They apparently said that if you are invited you will receive a special reservation number that will open up the December dates when you log in. So, take it for what it's worth. I'm amongst those painfully waiting for December 1.
On another note, I emailed customer support about the non-functioning BOG FP+ button on the restaurant's reservation page (the one that says "request fastpass+", but then just redirects you to the regular FP+ area without BOG as an option). I noted that it has been on the site for at least a month now and asked when will it be functional. The response I received was just a cut and paste spiel about BOG, that they've been accepting ADR's since August of 2012, you can make a reservation at 180 days, they are quick service at lunch, yadda, yadda, yadda. There was no acknowledgement of my question at all. I replied and said thanks, I don't need info about the restaurant and you didn't answer my question, which I restated. I have not received a response. Either the CM was evading my question or is really thick. Either is a very distinct possibility.
ETA: Interestingly, I just went onto the WDW site to check if the BOG request FP+ link was finally functional (I check every few days) and it was gone. I was logged in and couldn't see it at all. I tried a few times.