Wasted some time calculating how many unbid F/O vacancies were left in each category (only NB and 7ER) after the AE that just posted. Thought there may be a few others interested in these numbers, so I'll post here, as it may be mostly relevant to new hires.

NYC: 7ER-127, 73N-105, M88-80, 717-70 (382 total)
ATL: 7ER-46, 73N-51, M88-45, 717-0 (142 total)
DTW: 7ER-56, 73N-25, 717-0 (81 total)
LAX: 7ER-48, 73N-21, 717-0 (69 total)
SLC: 7ER-23, 73N-17 (40 total)
SEA: 7ER-30, 73N-0 (30 total)
MSP: 7ER-5, M88-0 (5 total)

Calculation is based on vacancies posted, plus those that bid off, minus those that bid into category. Example, ATL-717B had 15 new vacancies available, 20 bid off, and 35 bid into the ATA-717, leaving 0 remaining. ATL-M88B had 40 new vacancies, 43 bid off and 38 bid into category, leaving 45 remaining.

I didn't post anything for the 320, because there were no new vacancies nor did they backfill any of the roughly 50 F/O that bid off the 320. That category is likely to be fairly stagnant in 2015 (but good times ahead with the delivery of 321's in 2016).

The unfilled vacancies are somewhat (with many caveats) of an indication of what future drops may look like and what categories may move the fastest this year. Though new hires will still predominantly get NYC, while future AE's will still likely be used to fill the vacancies at the other bases.