Just leaked Windows 10 build 10176, which is generally referred to as the first RTM Candidate (RTM candidate). The leaked version is in English and is released in ISO format.
There are currently no more information for this particular build.
Yesterday we mentioned that after the release of the Chinese version we will see very soon the English build, from which we will publish the download links.
Build 10176 is ultimately the first RTM candidate, and so it's fairly stable and reliable.
Recall that RTM was originally scheduled for this weekteam, but sources within it companys reported that Redmond sees it as a possibility date release mid next week.
Before you start downloading ISO, you should know that it is custom made, ie made by a user who changed the ISO language of the earlier version of the Chinese edition.
The file name is 10176.16384.150705-1526.TH1_CLIENTENTERPRISE_VOL_X64FRE_EN-US.ISO.
Proceed with your own responsibility.
https://mega.co.nz/#!voR3XbCY!9NoZ1eHTkbI6meAiwFcNmNVnTFqihzmvWoA0zSynJHA
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https://openload.io/f/Lhn5-M9M1-I/10176.16384.150705-1526.TH1_CLIENTENTERPRISE_VOL_X64FRE_EN-US.ISO