It's fascinating really. I have been a season-ticket holder since we moved to The Amex, have gone to at least 50% of away league games in each of the last three seasons (some years higher and am set for at least this again), rarely miss a cup game, and went to all six Europa League games so far...
Doesn't look like it - those are the normally available blocks. 1,229 left according to my count and 3,000 could buy this morning. Sounds like the normal take up.