Since the release of the Windows 8.1 Preview, there hasn't been any new version leaks; we've only occasionally seen a few screenshots. This month, Windows 8.1 will finalize its RTM version, and honestly, it's very close. Right at this moment, an official version of Windows 8.1 has leaked online.
The Windows 8.1 Build 9471 was recently leaked, and some download sites have already provided resources. The leaked version is the Professional Edition, 64-bit, with the specific version number being 9471.fbl_partner_out30.130726-2004.374250883781fe63. From this, we can see that the version was compiled on July 26th and is a version Microsoft provided to its partners.
According to users who have already downloaded and installed Windows 8.1 Build 9471, this version is legitimate.
File details:
File: 9471.ISO
CRC-32: a22d72d0
MD4: 45222c2779ea7e879255bb3edaecc330
MD5: d016facc8207ddd39c4f3308d4e2e6ed
SHA-1: 7021ea24c820d53267390f95b6f89c422647ae54
Screenshots: