Complex sentence: The first nine episodes of season three were released on September 22,2017, for the original show's 30th anniversary; the remaining nine episodes of the season will be released on December 22,2017.
Split into simpler sentences: The first nine episodes of season three were released on September 22,2017, for the original show's 30th anniversary. The remaining nine episodes of the season will be released on December 22,2017.