Blocks 531, 532, 537, 538, 541, 542, 544 all look to me like they haven't been released yet, all greyed out and I'd doubt they've been sold including row z seats.
About what, 800 seats in a block?
Just shy of 6000 unreleased seats, plus maybe 2 thousand unsold in the other blocks. I'd say there's just shy of 8k seats left conservativly by reckoning.