I saw an article recently that a new events/reminders window is being added. So, i have switched the Try New Outlook toggle today and indeed, now reminders appear in a separate small window and not hidden in action center or notifications badge number. And it even allows to postpone to different times, not just 5 or 10 minutes. This is a very good development. Just one ask. It always popups forward. And in current Outlook if you minimize it, it stays in the taskbar and just glows gold if there is something new in there. I am not sure what are capabilities in this web app port, but would like it not to always jump forward and interrupt my current activity (typing something, sharing screen, etc.).
Also, the app icon changed a bit, but it is still various shades of blue and new email overlay indicator/badge is also bluish. It is harder to notice there are new emails with such icon than the yellow envelope overlay in the current Outlook version.