Looks like a big push to ruin JWs summer vaction months altogether. I'm sure JWs will just love going to the DC in June or July, then get harassed to sweat out August in FS. I'm sure the GB want to crack 8 million publishers as well, so balls to the wall during August.
Also notice the focus on harassing the inactive. Mentioned in three of the four letters. They aren't getting any results D2D so they think they can harass people back into the cult. Be ready if this is your status.