I'm looking to upgrade my flights booked through the great deal above. Expert Flyer doesn't show upgrade availability, so I'm looking using both ba.com and qantas.com. According to those sites there is a single first class award available on March 12 - yet via experflyer I see there are 4 first class seats available. I'm not flying until August - if I upgrade one ticket to first class, what are the odds that more inventory will be released before then? What is their schedule for releasing upgrade inventory?