This is the second time Christopher Plummer has played a character who can be referred to as King Herod. The first time was in Jesus of Nazareth (1977) where he played Herod Antipas, the son of this film's King Herod and one of the people who presided over Jesus' trial in the Easter story.
The first Sony Pictures Animation film to not have Sony Pictures Imageworks do the animation. Instead Cinesite studios provided the imagery and animation which was a great departure from other Sony Pictures Animation films which has the animation and imagery provided by Sony Pictures Imageworks.
Mariah Carey officially introduced and released herself the first trailer online. She will also be singing the original song "The Star" for the movie. It will be her fourth Christmas song that she wrote to be featured in a movie after All I Want For Christmas Is You, Where Are You Christmas and Oh Santa.
The trivia item below may give away important plot points.
When Old Donkey releases Bo from the mill stone, he tells Bo to go as he is now free, and technically sacrifices his own freedom to give a younger donkey the chance to be free. In Christian belief, the coming of Jesus was to free people from the laws and bindings of the Old Testament, by Jesus being the sacrifice; to release people who believe into freedom from the old laws.