Today, Version 1803 is considered an "end-of-life" product. Microsoft strongly recommends that users still on this version update to the latest version of Windows 10 or move to Windows 11 to ensure they receive critical security patches and performance updates.
"If you are still on 1803 right now? Stop. You are 4 years out of date. Upgrade to Windows 10 22H2 or Windows 11 immediately." windows 10 version 1803
Microsoft’s design language moved out of preview. Version 1803 introduced (transparency and blur effects) to more surfaces, including the Start Menu, Action Center, and the Settings app. The "Reveal" lighting effect—highlighting mouse hover interactions—became visible in list views and navigation panes. While not as drastic as Windows 11’s redesign, 1803 made Windows look modern and fluid for the first time since Windows 7’s Aero Glass. Today, Version 1803 is considered an "end-of-life" product