Today, we are releasing Windows 10 Insider Preview Build 18237 (19H1)
to Windows Insiders who have opted in to Skip Ahead.
What’s new in Build 18237 (*this one is kind-of cool)Bringing acrylic to the Windows sign-in screen
With today’s flight we’re adding acrylic, a type of brush from the Fluent Design System, to the sign-in screen background. The translucent texture of this transient surface helps you focus on the sign-in task by moving the actionable controls up in the visual hierarchy while maintaining their accessibility.
Official Microsoft announcement & what's new in Build 18237.https://blogs.windows.com/windowsexperi ... ild-18237/