TORONTO - Astral’s Playhouse Disney channel will follow suit with its U.S. counterpart and re-brand its English and French-language networks as Disney Junior in May 2011.The re-branded multiplex channel will also expand on its educational mandate to layer in learning that focuses on social values, the environment and healthy living.“Since its launch in November 2007, Playhouse Disney has continued to build its viewership, program offering and prestige,” said Joe Tedesco, SVP and GM of Family and Playhouse Disney, in the announcement. “The evolution of Playhouse Disney to Disney Junior comes at an exciting time and will add a new energy...