As of the latest build of Windows 10 in the Skip Ahead subset of the Fast ring, there's a new version of Windows, and as of right now, it's called Windows 10 Lean. It's for devices with low storage.
Build 17650 RSS
Microsoft today released a new Insider Preview build of Windows Server 2019, bringing the build number to 17650. Like earlier builds, this one will expire on July 2, and is available in ISO and VHDX.
Microsoft is finally adding a dark theme to the File Explorer, as has been discovered in the latest build of Windows 10 Redstone 5. Once available, it can be turned on via the Settings app.
Microsoft today released Windows 10 Insider Preview build 17650 to Insiders in the Skip Ahead subset of the Fast ring. There aren't many new features, but there are fixes and known issues.
Microsoft today has released a new Windows 10 Insider Preview build from the Redstone 5 development branch to Skip Ahead Insiders. Build 17650 contains mainly Defender improvements.