It appears there are cultist in the upcoming releases, although its odd, since I have seen the pre-order forms and Cultists are not on it. So while its very widely being reported that cultists are being sold in boxes of 5 with three autoguns and two auto pistol/close combat weapon sets, I am holding off on declaring this until I get a little bit more information.
Check out the pic above though from the White Dwarf with the cultists there. The pic comes from this page.
So while it looks like they are being released.... I don't understand why they are not listed on the pre-order forms stores are receiving (like the one posted up here from Frontline Gaming a couple days ago).