Or, you know, mid-May, based on the most recent one lol.
Seriously though, I would bet that things like the budget and sequestration factor into quotas, and so selections could (and most likely do) hinge on FY16 money. I'm not sure how much of an impact budget cuts have on personnel accessesions (I've only seen what happens to the current force numbers), but I'd imagine they could hold up the board for at least a few weeks, should they become a real concern. Considering that there only seem to be about 40-50 spots for about 200+ applicants, losing or gaining two or three of those would be a big deal (I think).
From what I've heard, and I have no idea how reliable this information is, the IW community is trying to boost its numbers over the next two years (somewhere around 150%). The number of 1810 selections from this next board should be a good validator.