The film's official production blog contains a good number of production stills as well as come clips from the film which have been put on YouTube. The animation looks very similar to the biblical parts of last year's Friends and Heroes. There's also a summary of the story which is useful for those of us who are not that familiar with it.
It's a bit unclear what's happening with the release of this one. The official site says it will "be available for purchase Winter 2007", but that's been and gone and there are no links or anything which suggests you can buy it yet. Moreover, there's nothing at Amazon as of yet.
I hope it makes it. It certainly sounds like an interesting idea.