I'm booked on AC856 on Tuesday. Promptly at midnight, I called in and added my name to the upgrade waitlist, but I'm a little confused as to my chances.

Here's the report from the Amex ITN tool for this flight:

Cabin class: J9 C9 Z8 Y9 M9 U9 B9 H9 V9 Q9 L9 A9 K9 N9 G1 R0

Obviously there are no R seats left, but with the J9, my understanding is that there are still 9 unassigned seats in J. Am I reading that correctly? If that is the case, is there any chance of having the extra J seats available for upgrades at the gate, or does this just mean there are 9 seats that aren't assigned to someone?

I've already confirmed upgrades for the other two segments of my flight (figured why not, the certs expire in February anyway and I'll get two more before the end of the year thanks to requalifying), but would dearly love the extra space for the overnight to LHR!