According to the official website, TV Anime of Maoyuu Maou Yuusha (まおゆう魔王勇者, Demon Queen and Hero, also known as Spice and Wolf meets Dragon Quest) will be aired in this Winter, starting from January 2013. The Anime adaptation was announced in late June this year and if you somehow missed it, check out the post Maoyuu Maou Yuusha TV Anime Announced for more back stories and summary about this series. The series may remind you of Spice and Wolf due to the same voice casts of the two protagonists. Apart from that, we also see some familiar names show up in the cast list and judging from the illustration on the official website, we are quite confident that we will all enjoy the show in the frozen winter. To learn more about the character design, check out this page.
November 6, 2012 Just updated with the second PV of the Anime, you really need to check it out.