Windows 10 Technical Preview build 10061 got leaked online. Unlike other leaked builds in the past, this particular build cannot be installed on your devices running earlier version of Windows 10 technical preview builds. Microsoft has made some changes to the encryption of the new build which makes it unsuitable for upgrade from our Windows 10 devices. The strange thing is that you can download ESDs of Windows 10 build 10061 straight from Microsoft’s Windows update servers. If some is able to decrypt the new RSA key which is used in this ESDs, we will be able to install this new build.
If you really interested in the ESD files, download it here.
Update: Official build from Microsoft is available for download now. Read about it here.