Microsoft on Friday night released a cumulative update, build 14393.3, for its latest beta of Windows 10, version 1607. That may sound odd, but it's a very good sign that we have in hand the final RTM version of Windows 10 Redstone 1, aka Windows 10 Anniversary Update.
This time, though, the 'Softies made it clear what they were doing, instead of muddling things together with the RTM release. In November, the first cumulative update appeared the day before the Fall Update shipped. This time, we've been given almost two weeks for things to settle down before the Aug. 2 RTM release (although there's always the possibility that there will be more cumulative updates to build 14393 before it starts rolling out to the masses).
The build 14393.3 update appears as KB 31176925. There's no KB article (let's hear it for consistency), but you can see the minuscule release notes on the Insider Hub if you're running Windows 10. If you aren't running Windows 10, there's no independent way I can find to see the announcement. I guess Microsoft thinks you aren't interested.
That's probably a good assumption.