There are many unusual features in Oreo updates like the picture in picture mode, background app optimization, notifications channels, notification snoozing and many more features in Google Oreo.
For Instance, new keyboard gifs and stickers builtin. This update will also bring February Security patches.
According to Sammobile "Samsung Blog," they said that they are this new latest upgrade in Oreo is only available for beta users only. The general user of Galaxy S8 and S8+ will get this feature very soon. These features are not rolling in all countries. The update is only available in few countries. For more countries, they will take some time to launch there. If your country is not on the list, so till then you have to wait for these awesome updates.
You can quickly check that these are available for you or not. So, only you have to open your settings then go to Software update on your device. If it is available, then you have to do it manually.