I'm on version 8.4.16.483 which was just pushed out today and besides some minor ui tweaks, it appears that the touch preview feature has been removed. Which is a shame, because it was one of my most used features in music discovery, and one of the essential features which keeps me with Spotify instead of other music streaming services.

It was a terrible idea to remove this feature, and I hope it will swiftly be added back in a future update. Because this feature is no longer present in Spotify, I feel less attached to the service as a whole, and am more likely to reassess moving over Google Play Music or Apple Music, which offer better local music integration than Spotify.