Special Shabbats are fixed Jewish Shabbat days, which precede or coincide with certain Jewish holidays during the year. Each one has a special name.

Shabbos Shuvah ("Sabbath [of] Return") refers to the Shabbos that occurs during the Ten Days of Repentance between Rosh Hashanah and Yom Kippur. The Jewish calendar is so designed that only one Shabbos can occur between these dates. This Shabbos is named after the first word of the Haftarah (Hosea 14:2-10) and literally means "Return!" It is perhaps a play on, but not to be confused with, the word Teshuvah (the word for repentance) which is the leitmotif of Ten Days of Repentance.

(... from Wikipedia on 2010-07-30 19:12:02 )