The music in the promotional video is the official soundtrack for Pulsar, by the way.
It has also been told to Looopings.nl that the ride will get a background story, about a mysterious machine which collects all the lost energy from all over the world. To prevent an eruption from all this energy, it must be activated once and a while.
Theming from Pulsar would have been done by Jora Vision, but the Dutch company went bankrupt last week. The park however, said that there is a plan B and they will open the ride in May 2016 whatsoever, with or without theming.