Spoke with the Program Manager today, and I don't think I'm providing any groundbreaking information that Rufio181 or NavyOffRec haven't already mentioned, but the SWO board did meet this week and results should be posted within the next week or two. What that means is that the plan is for a late May SWO board. The Pilot/NFO board and SWO board may stay separate like they did this month, which would put Pilot/NFO possibly the first week of May and SWO the third/last week of May.
The biggest takeaway from the call was when these boards close for accepting applications. The deadline to submit is roughly 1 month prior, just like with the boards that have set dates. So long story short, if you are looking to apply for Pilot/NFO, I recommend getting your kits submitted by April 1. For SWO, I would say April 15. Now those deadlines are for when the recruiting district submits the kits, so you should have everything into your recruiter 1-2 weeks prior to that to play it safe. This is why there were a lot of people who thought they were at the February Pilot/NFO board, when in fact the deadline was at some point in January.