The Shabbos before Yom Kippur is called Shabbos Shuvah, which literally translated means “Shabbos of Return.” This alludes to the final redemption, which will usher in the World to Come – an era that will be completely and exclusively Shabbos.
By calling the Shabbos before Yom Kippur by this name, we express our hope that the final redemption will arrive. In this way, Shabbos will immediately return to the world – and this time, it will last forever! ~ Degel Machaneh Efraim