Meanwhile the same version is released on iTunes, so I'm thinking it must be the original. For me, the voice of Pharrell Williams in this version sounds a little different (smoother) to the first released teaser at Coachella, where the voice sounds a little more powerful and this made me thinking it's a fake version in conclusion of all the rumors.
Very pleased that spotify notified me that this track was available (on Friday PM BST) Now it's had the most streams on spotify in a single day ! So why is it not in the top track's list today ? How many streams did it get ?