Samsung has yet to specify when its next Galaxy Unpacked event will take place or what will debut during the show. However, Evan Blass has released an entire salvo of tweets revealing pretty much every device to be showcased therein, in every new color per product. They include the Galaxy S21 FE, despite rumors that it will in fact miss the launch in question.
https://www.notebookcheck.net/Galaxy-Unpacked-a-famous-leaker-purports-to-spoil-the-Samsung-event-with-an-entire-threadful-of-leaks.550720.0.html