Microsoft is supposed to officially release Windows 10 Anniversary update tomorrow. But it seems the official ISO images for Enterprise versions is already available at Microsoft Volume Licensing Service center. The Anniversary update release Build is the RTM Build 14393 without any cumulative update as confirmed by these ISOs.
You can now download the official ISO images of Windows 10 Anniversary update by clicking on the link below. These ISO images have been downloaded from VLSC and were shared on Twitter.
You can now also download official ISO images directly from Microsoft’s site.
Keep in mind that both the links above let you download non-insider Consumer Windows 10 Anniversary update. So you can use either.
Click here to read the most detailed & massive Windows 10 Anniversary update changelog on web with all new features and changes over TH2 (Version 1511 or Build 10586.XXX).
You can also download the earlier shared third-party ISO for Windows 10 Anniversary update Build 14393 by clicking here or you can wait for the official update to become available. You can also download ISO of Build 14393.3 and Build 14393.5 by clicking here.