User blog:Jacob Barth/Young Justice Vol. 1 tie-in comic

Does anyone know how many issues will be contained in the Vol 1 young justice paperback here?

http://www.amazon.com/Young-Justice-Vol-Art-Baltazar/dp/1401233570/ref=sr_1_3?ie=UTF8&qid=1323465674&sr=8-3

Just wondering because I've been thinking about buying it but haven't gotten around to it.