Some news on Frozen! Idina Menzel is signed on as the snow queen, and Kristen Bell has been cast as Anna. Robert Lopez and his wife Kristen Anderson-Lopez are going to be doing the music. The plot also looks quite a bit different from the original story:No word yet on who's playing Kristoff, but we'll keep you updated! (Source)
"In ‘Frozen,’ a prophecy traps a kingdom in eternal winter, so Anna (voice of Bell) must team up with Kristoff, a daring mountain man, on the grandest of journeys to find the Snow Queen (voice of Menzel) and put an end to the icy spell. Encountering Everest-like extremes, mystical creatures and magic at every turn, Anna and Kristoff battle the elements in a race to save the kingdom from destruction."