Basically, this is what I understand (truth or not...who knows)
On the application you need to tell them your scores and that you'll be retaking the DAT. However, the school isn't going to just trust your numbers on the AADSAS application for DAT scores. If the ADA did not directly send your DAT scores to the school, you will probably not be reviewed for an interview until those official scores arrive.
At the schools where you offically had our scores from the first DAT you took sent, you will be looked at. If your scores for the first DAT are okay for the school, they can offer you an interview despite the fact that you plan to retake the DATs. If the DAT scores are too low for that school, but you marked that you are retaking them, then they'll hold your file to review later. Most schools use DAT, residency, and GPA as markers to decide who to look at first. Just because you say you're retaking the DAT doesn't mean they won't review the file at all. But if your scores are really bad, then that initial review will just be to hold your file until your next set of scores comes in to the school.
In august, when you retake the DATs, the scores will get sent out again to whatever schools you decide. Those schools will then look at your application...although don't expect them to go running to find your application as soon as the scores come in...and review it then. It also doesn't hurt to call the school after you retake the DAT and tell them you just finished another DAT and that your scores are coming. Some schools are more open to talking directly to you and will ask unofficially what you got.
Depending on when in August you take the DAT and what schools you are talking about to get "first cycle" interviews...the answer is a definite maybe.
For schools that start offering earlier interviews like Case Western or UT schools, an August DAT isn't going to get you into the very first week of interviews. There is never a guarantee for early interviews no matter what your scores are and no matter when you turn stuff in, but august is a little late for some schools. For most schools? August is fine. You'll still get plenty enough interviews both before and after December 1st if your application sparks the interest of the ADCOMS