Oh, and the pizza: Windows Insiders will begin noticing a “pizza” icon on the command bar in File Explorer, Microsoft says. This icon denotes that an Insider is previewing the Windows App SDK ...

Some of these icons, such as Calendar, Mail, File Explorer, Your Phone, and OneDrive, have already made it into the public releases of Windows 10. New File Explorer Fluent icons revealed ...

Microsoft released new icons for its Office suite reflecting its move to the cloud in 2019, and it's been rolling out updated icons for Windows 10's core apps (such as Calendar and Mail) since then.