Updated: Mar 13
"In Case You Missed It" a timeless phase used to inform others of the latest and greatest has been repackaged as "ICYMI. Repackaged for the new instant that almost everything comes in called initialism..
Honestly I recently ran into ICYMI a few times before I googled it. and thought this was a good find to keep up with the instant production of information. It is one of the latest of initialized phrases to keep it short. So let's clear up the confusion. Here's a link that further explains: