Microsoft has released a new Windows Insider preview version of Windows 10 for PC, with the build number 10576, to members who have signed up to get updates in the Fast ring. From Windows Insider chief Gabriel Aul:

Today we are releasing Windows 10 Insider Preview Build 10576 to Windows Insiders in the Fast ring. Not only does this build have a good set of bug fixes and fit-an-finish, it also includes a few new things for you to try.

Stay tuned for more on what's new, fixed, and more in this build.

Source: Microsoft