A new partner build of Windows 8.1 got leaked today on internet. This build 9477 is of X64 and zh-CN version. There is no significant change spotted from the previously leaked builds. From October 18th in New Zealand, Microsoft Windows 8.1 and Windows RT 8.1 will begin rolling out worldwide as a free update for consumers with Windows 8 or Windows RT devices through the Windows Store. Windows 8.1 will also be available at retail and on new devices starting on October 18th by market.
The leaked build is available from the usual p2p sites.