The character details have not been released by Disney, but there was confirmation that the voices for Anna and Else will be coming from Kristen Bell and Idina Menzel, respectively. Fans of Olaf and Kristoff will be happy to know that they both will be in the second film in an unknown capacity. At this time, other cast members, or the one that will voice the new villain have not been confirmed.
The release date is a solid one, as it was mentioned by the CCO for Walt Disney and Pixar Animation Studios, John Lasseter. Lasseter mentioned the 2018 release in an interview with Variety, but did not go any further about movie details, which was expected.
Director Chris Buck, Jennifer Lee and producer Peter Del Vecho will be on hand to take charge once things get moving. According to reports, the second movie is coming out so much later because the company does not want to rush through it and make sure that it can live up to the original film.