Facebook is planning to introduce a new set of icons for its notifications. The new icons are not exactly different from the existing ones, as you already know from the title, these are basically redesigned icons of the existing ones.
Reverse engineer Wong was able to get a sneak peek of how these new re-designed icons might look like, and thanks to Twitter, we also know how the redesigned icons for notifications might look like.
Facebook app is testing redesigned icons for notifications pic.twitter.com/RcaYQT8KWW
— Jane Manchun Wong (@wongmjane) May 15, 2019
Since the feature is in the testing phase and yet to become available to the public, there is no way you could get to see this on your Facebook app, assuming you’re not a reverse engineer.