A Microsoft job listing for the Windows Core User Experiences team seems to indicate the upcoming Windows 10 21H1 Sun Valley update will see a totally overhauled user interface including new icons, a revamped File Explorer, and more. Current Insider Builds are also showing some visual changes in the Settings app, which includes new battery usage graphs, camera settings, app archival, and more.
https://www.notebookcheck.net/Windows-is-BACK-Microsoft-job-listing-solicits-applications-for-radical-Windows-10-21H1-Sun-Valley-visual-makeover-new-battery-meter-and-other-changes-already-in-Insider-builds.513003.0.html