I wouldn't hold my breath. AFAIK this was bankrolled by Sony to play on PS4 with move controllers. The same studio (Media Molecule) did the Little Big Planet series, which also ended up PS exclusive. Not to mention if Sony want PSVR to do anything other than die a death over the next 6 to 12 months they'll need an exclusive like this to keep bums on headsets
On the plus side, we've hardly even started with VR content creation and packages designed to leverage it. Wouldn't be at all surprised if Dreams was obsolete before they'd even finished porting it.