Is Windows 10 beta build 14393 the final Windows 10 Anniversary Update
According to Dona Sarkar's official announcement, which looks like a Cliff Notes version of a build release:
Brad Sams at Thurrott.com suggests treating the bug with care:
Those of you who have been struggling with Surface Book and Surface Pro 4 bugs since their original release may no doubt take the advice in stride.
I've heard that Microsoft has since compiled a new build, 14394, which has not been widely distributed. Some take that as an indication that 14393 will not become "the" Windows 10 Anniversary Update. Many have forgotten the genesis of version 1511 build 10586. Microsoft actually compiled a build 10587 but never distributed it to the outside world. Instead, 10586 rolled out on release day, and it was immediately accompanied by a Cumulative Update -- CU No. 1, in fact -- that brought the build number up to 10586.3.
It's anybody's guess whether Microsoft will use the same sleight of hand for the release of version 1607. Last time it worked, although some users were confused for a while.
I'd be willing to bet at this point that build 14393 will likely be RTM.