It appears Pajiba's report about Guillermo Del Toro doing a Van Helsing film is partially true.
Del Toro took to the web to clarify things at DelToroFilms.com and had this to say:
Van Helsing (writing and producing) is still in talks and not quite certain. Even then, I would like to share my plans only at COMICON. I am taking it slowly and marking very, very carefully the calendar of projects that I will be involved as producer, writer, etc I will not announce the project I intend to direct until then. I am very happy to say that all the projects and partnerships being considered are both quite surprising and, I hope, powerful. Much as I want, I cannot say much more at this time but I anxiously await to share these with you. I will be shopping on the floor in San DIego for several days. See you there!!
Of course, anything that goes down at Comic-Con will be covered here at Shock Till You Drop, so you won't miss a beat. Exciting times ahead for Del Toro. We're eager to see what he'll do next.
Source: Del Toro Films