Microsoft talks about redesigning over a 100 product icons based on Fluent Design System by Pradeep Viswav Microsoft, Office 365
Apps [Updated with new icons for Mail and Calendar UWP apps]Microsoft to release a new icon for Mail and Calendar app, and this is what it looks like
Microsoft, News, Slider, Windows 10 More than Office – Microsoft leaks new, more colourful look for Windows 10
Microsoft, Office, Office 365 Microsoft announces support for Scalable Vector Graphics (SVGs) in Office apps