Microsoft execs don't want us to use RTM (release to manufacturing) or even RTW (release to Web) any more, now that Windows 10 is a continually updated "service," but most of us still are using the RTM convention to refer to the build that ultimately will go to "normals" who aren't in the Windows Insider program.

The 14393 preview build includes no new features, but a few remaining fixes for both phones and PCs. In the notes about the new build, Windows Insider chief Dona Sarkar notes that those having issues with their cameras on Surface Pro 4 and Surface Book when running the latest Insider builds should see a driver update to fix this soon via Windows Update.