hjs,
Just a little off on your guess.
Interviews didn't begin until July. The two classes this month are filled with guys from the pool before this round of interviews along with a few (4 or 5) guys from July 8th (first date for interviews this summer).
Pool filled back up a little with the Aug board and will gain more with this months board. Sounds like they will need to have another since interviews are still going on into October.
Those picked up on the last board are being told maybe late this year, early next (nobody knows).
Hope it clears it up for some.