No not really, an empty seat map for a flight that's not until October is completely meaningless. It's way (way) too soon to have any idea any how full the flight will end up. Most people haven't even begun to book travel that far in advance, especially true for paid business class travel. I imagine if you look at the seatmaps for the same flight +/- a month you'll see that most flights are equally wide open.

Again I still think your odds are good, just that an empty seat map for a flight 7 months in advance doesn't tell you anything about upgrade odds.