^ Because I'm not sure if the "4th" property even counts as a WB property as it isn't even a movie... And I'm not allowed to fully disclose the rumored line up yet, I do not want to put my source at any risk, so please, no begging.
I really think Uni. did strike a deal with WB, not 'cuz of HP, but most likely with HP this year. of course it's just theorizing.