When does My Little Pony: Winter Wishday return?

My Little Pony is a toy line and media franchise developed by American toy company Hasbro. The first toys were developed by Bonnie Zacherle, Charles Muenchinger, and Steve D'Aguanno, and were produced in 1981. The original toy line ran from 1982 to 1992 in the United States and to 1995 globally. The brand grossed over $650 million in retail sales in 2013 and over $1 billion annually in 2014 and 2015.