Its really hard to guess when it comes to that. Apple is on builds that never even get seeded to developers, they only remain alpha stage builds. You can tell this by the revision letter of the build number. This build has a little g, so this one build went through 7 stages before it was seeded. In addition to that, Apple is probably working on the GM as that needs to be seeded for production of new devices. So most bug fixes that are reported in July, won't be incorporated in until the final release in the fall.
Most of the fixes in August 7th beta would have been reported in June. Because of how many builds they are ahead internally. Nothing reported from the last 2-3 weeks will be in this build.
Hopefully that answers your questions.