Will this update have the new emoji's?
Thanks for reaching out. We can't speculate on what new features come with new updates.
Most likely yes I don't see why they wouldn't include them.
If this software has a lot of issues can you go back to 9?
At this time, there is not an authorized way to revert to previous system software.
So is it better no to do beta?
Nothing was mentioned about new emojis but features such as the gestures will be added
Yes, as they're a part of Android 10 and Samsung cannot change that.