The Anniversary Update is currently the Current Branch. From Microsoft's own documentation - The CB servicing model is ideal for pilot deployments and testing

The Anniversary Update is currently the Current Branch. From Microsoft's own documentation - The CB servicing model is ideal for pilot deployments and testing of Windows 10 feature updates and for users such as developers who need to work with the latest features immediately. In contrast, the CBB servicing branch is typically used for broad deployment. Windows 10 clients in the CBB servicing branch receive the same build of Windows 10 as those in the CB servicing branch, just at a later time. CB releases are transitioned to CBB after about 4 months, indicating that Microsoft, independent software vendors (ISVs), partners, and customers believe that the release is ready for broad deployment. https://technet.microsoft.com/en-us/itpro/windows/manage/waas-overview https://technet.microsoft.com/en-us/itpro/windows/manage/waa... Considering we are only two months past the release of AU, I would consider it to be in the pilot not stable deployable phase. If you want Windows to be stable, and you dont want to be a beta tester, go to Windows Update advanced settings settings and check Defer feature updates. It's the same pattern Microsoft has always taken, just accelerated. Vista was released to consumers so their Enterprise release of Windows 7 was adequately tested across as many hardware and software scenarios as possible.