Apple released iOS 11 Developer Beta 10 (15A5372a), as well as iOS 11 Public Beta 9 on Wednesday. Both releases are likely golden master candidates, though Apple hasn’t specifically stated that. The company is expected to formally announce a shipping date for iOS 11 during a September 12th media event.
The developer beta can be downloaded from the Apple Developer Connection for compatible iPhone, iPad, and iPod touch models. Devices already provisioned for developer releases will find the update in Software Update.
If you want to try the Public Beta, enroll your device in the Apple Beta Software Program. Once you’ve done so, you can download the releases through iTunes or through Software Update on your device. If you’ve already enrolled an iOS device, you’ll find the update in Software Update or iTunes.
At this stage in the development cycle, iOS 11’s feature set is locked in and each release focuses on bug fixes.