See:Does AOU has been placed Vestiaria into Drepanis for reason of convenience ?
Incidentally, the first batch of 2015 proposals was posted in Nov 2014, but still no sign of any 2016 proposals so far – perhaps we can expect fewer proposals this year...?
I think every year they get posted progressively later than the last. I don't think it's the number of proposals, I think its the fact that they probably don't have a dedicated website person (at least this is what I was told some years ago). It's basically a volunteer position and obviously research/work/family stuff comes first, so stuff get delayed.
I am sure someone from the AOU can correct me if I am wrong. It wouldn't surprise me though if sometimes this year we get several proposal batches up at once.
•2015-A-9: Correct the scientific names of (a) Leptotila cassini and (b) Amazilia saucerrotei