Microsoft announces support for developing third party extensions for the Edge Sidebar - Neowin

The new support will allow developers to make Edge Sidebar extensions for Microsoft's web browser so they can offer various new functions to users of Edge, similar to the Bing Sidebar.

Windows 11 Insider Beta Preview Build 22621.2050 and 22631.2050 adds new File Explorer Home - Neowin

Edge may soon save screenshots of every page you visit - gHacks Tech News

The new Edge will seemingly import tabs set aside from the legacy version as favorites - Neowin

New Microsoft Edge Sidebar Extensions Tips HTMD Blog

5 Microsoft Edge (and Chrome) extensions everyone should use

Microsoft Edge is getting new theme options soon - gHacks Tech News

Windows 11 Insider Beta Preview Build 22621.2050 and 22631.2050 adds new File Explorer Home - Neowin

How to Customize the New Sidebar in Microsoft Edge

Microsoft Edge, Microsoft Wiki

Microsoft Edge's new sidebar on Windows is getting better in the next update