Reading that M$ will release the the update anywhere from July 29 to Aug 2... Will MSDN get the ISO's sooner so someone can leak them?
If it's the same scenario as with 1507 it will be available (for insiders) about 2 weeks before MSDN will release the ISO's.
Does it really matters? It's a rolling release anyway. Once youwill get the anniversary ISO you will keep it for a week or two and then you will upgrade with a new build, just like on the latest two years.
The Win 10 Team hasn't even signed off on the final Build yet. The Anniversary Update is still in development.