Finally. I knew about the collaboration a week ago, but I didn't have any release date, so I was waiting until it was announced. Anyway, can't wait to listen to it!
Anyway, despite I prefer OA/OS releases, I guess it's better to put the track for pre-order because the former could have 'killed' the performance of the track in my opinion. I assume a video is planned to be shot (maybe, they already did?), so it's better to maximize everything to get a better peak.