I found it! To the left of the text box is (>), click that then a (+) symbol shows up, click that. Now some options pop up, there will be one called Magic Rewrite, click that. Here is where you can choose what style to change your text into. Remix, Shakespeare, Chill, Excited, Lyrical, Formal or Short.
So I had seen and used the Shakespeare part in samsung messages it was also in the Google messages. It is not showing in either of them for a brief moment they were showing on my girlfriends phone (both s24 ultras) and wasn't showing on mine and now don't show on hers any more either.
I agree. It was one of my favorite features! I loved texting my boss using it. One day, he said, "Can you please text me in English??" And I said, "It IS English sir!!" š
