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.

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

Windows 10 Help Forums

Exclusive: This is what the new Chromium-based Edge looks like - Neowin

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

Microsoft Edge – Sidebar

Discussion Thread - Google Chrome Stable Channel Updates, Page 8

Windows 8 - Wikipedia

OpenAI brings 70+ ChatGPT plugins and web search to all ChatGPT Plus users - Neowin

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

5 Microsoft Edge (and Chrome) extensions everyone should use