Microsoft just uploaded this video:
https://youtu.be/yg5cUyPBHjI
updated the What's Next page with new stuff:
https://www.microsoftedgeinsider.com/en-us/whats-next
at some points in the video it demonstrates a sidebar (0:20 and 0:47), it looks very good and fluent, it's apparently for vertical tabs
Vertical tabs
It's easy to end up with a ton of tabs open. The more you have open, the more difficult it becomes to find, switch between, and manage them. With vertical tabs, you can easily shift to view your tabs in a pane to the side. This allows you to easily see the titles and access controls like mute and close. It even makes it easy to reorder your tabs, with the ability to drag and drop to rearrange. When you want to focus on a specific page, you can collapse the pane. Anytime you need to switch between tabs, you can hover over the pane to see all the information you need. The new Microsoft Edge is the only browser to offer built-in vertical tab navigation allowing for a more streamlined experience.
Smart copy
Copying and pasting content from the web can be tricky – selecting the content can be challenging and pasting doesn't always look like the original. Smart copy makes it easier to select, copy, and paste content that you find across the web, maintaining source site's formatting, spacing and text. Use your mouse to select any area or content (including charts, images, etc.) and when you paste, you will get the option to paste as an image or to retain the original source formatting, saving you valuable time. This is one of the many ways the new Microsoft Edge is providing tools to help you be more productive while browsing the web.
Password Monitor
Data breaches worldwide have been on the rise and the security of your data is one of our top priorities. Password Monitor on the new Microsoft Edge notifies you when your online credentials have been detected on the dark web. If Microsoft Edge uncovers a match with your saved passwords, you will receive a notification on the browser informing that your credentials have been compromised. Through a dashboard view, people can see a list of all affected accounts, visit the websites directly, and take action accordingly.
