Microsoft have released build 14390 of Windows 10 Anniversary Update. The PC and Mobile builds are for Windows Insiders on the fast ring and this could be the release that goes out to Windows users August 2nd , although I will hedge by bets and say there is a chance for another couple of builds yet.
For PC build has the one fix and one know issue:
Improvements and fixes for PC
You should no longer see the error code 0x80004005 when enabling Developer Mode on the “For Developers” Settings page if your PC is using a non-EN-US language.
Known issues for PC
AWARENESS: A recent fix went into place for the Hyper-V firmware that will that affect the ability to boot Windows Server 2016 Tech Preview 5 VMs with Secure Boot enabled. A fix for TP5 builds has been developed however, due to release schedules, the Insider Preview build changes will be released before the TP5 fix is released. During that time, if you try to boot a new TP5 VM with Secure Boot enabled, it will fail. The workaround is to disable Secure Boot during this period.
For mobile there are just these know issues:
Known issues for Mobile
Voice Recorder does not show up consistently as an option for Call Recording. We heard your feedback and plan to release a Voice Recorder app update via the Store soon that has the fix for this issue.
Wallet users are prompted for a PIN twice when using tap to pay from a locked phone. You can enter their PIN twice and tap as usual once the phone is unlocked. A fix for this will come as a Wallet app update via the Store.