If you are still on 10.13.0, updating to 10.13.1 is a noticeable upgrade in responsiveness—especially on spinning hard drives (though Apple discouraged HDDs for this OS).
The update introduced over 70 new emoji based on Unicode 10, including mythical creatures (vampires, genies), animals (giraffes, zebras, hedgehogs), and various food items like dumplings and fortune cookies. macos high sierra 10.13.1
Improved the reliability of Microsoft Exchange message synchronization. If you are still on 10
The "deep story" of macOS High Sierra 10.13.1 is defined by a massive security oversight known as the "root bug," If you are still on 10.13.0
For a fresh installation, users could download the full "Install macOS High Sierra" application from the App Store, which at that time included the 10.13.1 update.
Improved message syncing reliability within the Mail app.