Special Shabbatot are fixed Jewish Shabbat days, which precede or coincide with certain Jewish holidays during the year. Each one has a special name.
Shabbat Shuvah ("Sabbath [of] Return" שבת שובה) refers to the Shabbat that occurs during the Ten Days of Repentance, but is between (i.e. not including): the two consecutive Days of Rosh Hashanah; and the Day of Yom Kippur. Only one Shabbat can occur within the seven days period that falls between these dates. This Shabbat 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).
(... from Wikipedia on 2012-04-17 12:29:56)