First hit's free: The IWC (INTEL, CW, METOC, IP) DCO board is once a year, and FY-16 was in January, so reasonably expect January 2017 to be the time frame. Kits are normally due to the processor one month in advance, but don't wait that late. You want time in case you have to make corrections, or track down additional documentation. Program Authorization 108A is the official guidance for requirements and such. Google away.
Thanks to ABMD and fieldrat for the info, particularly about 108A. I've been all over the process so far (completed all the paperwork, cleared MEPS). I'm just in a holding pattern, waiting on the interviews.