Windows 10 Build 9901 looks much more consumer-oriented than any other previous Windows 10 build and we have covered many changes that it comes with in our earlier two articles here and here. Some more changes are revealed in below screenshots posted by WindowsBlogItalia. Many of these changes are already present on Windows Phone 8.1 and have made their way to Windows 10 Desktop.
Though, you need to read this before trying to install this Build.
OneDrive backup of app data, settings, layout etc: