People who downloaded and installed the recently leaked 10056 build of Windows 10 may see an update to a new version, 10061. However, they won't be able to install it as this build is just for Microsoft employees to try out.
That bit of information was revealed late on Wednesday by Microsoft's Windows Insider leader Gabriel Aul on Twitter:
"People who installed the leaked 10056 build will see 10061 offered, but unless they are MS employees it won't install."
Source: Gabriel Aul (Twitter)