Family outsider Cyrus Mistry will take over from leading Indian industrialist Ratan Tata when he retires as chairman of Tata Sons next year, the board said Wednesday. Mistry was appointed Wednesday as deputy chairman of Tata Sons, the holding company for a sprawling salt-to-SUV family empire. The board said he is to serve in that role for the next year as Tata grooms him to take over in December 2012. Tata Sons owns the Jaguar and Land Rover brands, as well as Tetley Tea. The Tata Group also includes Tata Steel, Tata Motors and Tata Power. Most analysts had expected Tata to appoint a successor from within the family.