Since forums like this tend to be negative... thought I'd start a string of "Things to Like".
Install on Win10 latest stable version was a snap... used a regular account and provided admin authorization on prompt
Pre-loaded information on new Edge was informative without being overbearing
Quickly found the O365 plug-in... works very smoothly. Of note, like the location sensitive right click. Outlook web application right click in a blank space brought up the browser context (Back/Forward/etc) right click in an Outlook sensitive area like the folder tree brought up the Outlook context.
All in all nice out of the box on this beta for a first few tries