It was apparently nominated for an Oscar this year, and is out on Blu-Ray and DVD next Tuesday, October 5th. What I find amazing is I have this bizarre Brendan Gleeson crush, and he does a voice in this movie, yet I've never even heard of it until today. But the stills are gorgeous (more after the jump link), and the few clips we have are visually appealing, too. The styling is a bit Genndy Tartakovsky, but it takes place in Medieval Ireland and features the real-life "Book of Kells".
Although the characters, fantasy elements, and plot specifics of this movie are fictional, there is a real "Book of Kells", an illuminated, heavily illustrated rendering of the Four Gospels of the Christian bible, that dates from the Early Medieval period (probably the early Eighth Century) in Ireland. The best historical and archaeological evidence suggests that, starting shortly after it was finished, the book was moved several times (including, as depicted in the movie, during an Viking invasion) and lost for various periods. It has been housed at the library of Trinity College, Dublin, since the Seventeenth Century, and is considered perhaps the single most valuable cultural artifact of Irish History that has ever been discovered. Some of the design concepts for the movie echo aspects of the original Book of Kells; for instance, the shapes of the repeated tree patterns as Brendan enters the forest are quite similar to the arrangement and shapes of the columns and arches in the "Eusebian Canons, Folio 5R" page of the real book.
This clip introduces the two main characters: a little boy named Brendan, and the faery slash wolf-girl (greatest "slash" combo ever) Aisling -- which I keep hearing as "Ashley" with the Irish accents.
And, to cap it off, here's a few stills from the movie, some of which feature Brendan's cat.
The DVD / Blu-Ray combo packs are loaded with special features and extras, including a special collectible 24-page full-color prequel graphic novel by the film's director that follows Aisling's and Brendan's adventures that took place before the story in the film begins.