Casting for Sweep/Wicca movie?

It was announced not too long ago that Universal got the rights to turn Cate Tiernan's Sweep book series into a movie. It's being made in conjunction with Vince Vaughn's production company. I haven't heard much else about it, but I'm an actress and I was wondering if anyone knows who is doing the casting for it or when they would be having auditions. It's a great series and I just think it would be cool to be a part of it even as an extra or something. Thanks for the help!