Paint 3D and Remix 3D will only be available in English for now, Microsoft says, but it'll expand regions and languages soon. Going forward, the app will be a permanent (and free) part of Windows 10. Other new features include ePub reading in Microsoft Edge (with three themes), PowerShell as the defacto File Explorer command shell, improved language support and, of course, a bunch of bug fixes. The Windows 10 Preview build (14971) is now rolling out to Insiders on the Fast Ring, Microsoft's update system for braver users who want new stuff as quickly as possible.