As an update for you "Asia Watchers", I am pleased to breath new life into an old thread - concerning the now less than 3 weeks NRT flight i'm on, and the state of play is:
777 BE Seats Taken (assume paid and confirmed) 29
777 BE Seats Free 19
777 BE Seats (For Crew Rest) 4
So as the next couple of weeks go by, we'll see what happens - the last time I got upgraded, it was about a week before, and being 6'4" tall, the upgrade is definitely nice to get..!