NEW YORK--(BUSINESS WIRE)--Nickelodeon is expanding its top-ranked preschool programming slate with the addition of two brand-new animated series: Digby Dragon, premiering Monday, Jan. 23, at 7 p.m.

Nickelodeon has pulled together its management and creative teams from Nick Jr. and Noggin and set up umbrella division Nickelodeon Preschool. Brown Johnson will keep her title of Noggin general ...