One of the features that interested in the beta was predictive emoji in samsung keyboard, cant seem to find it??
When you type a text and insert an emoji, a sticker-like icon should appear above it.
If you tap on it, you will have an option to enable suggested stickers (based on emojis or text).
Once you enable it, while writing a text suggested stickers will appear above the text input field
go to settings》general management 》language and input》on-screen keyboard》samsung keyboard》smart typing and turn on the stickers at the bottom.