It has been discovered that Spotify’s support page now references Tesla integration for US vehicles. It should be noted that this is the same page content available on UK and other European countries.
This move was largely expected, as Spotify has been confirmed in early builds of the version 8 beta. I for one am quite excited. While Slacker (which will likely no longer be an option) was nice, it tended to repeat songs routinely, and didn’t have much of the music I personally like. I’ve been using the Spotify service (streamed via bluetooth to the car) for several months now, and quite like it.
Now hopefully Tesla sees fit to allow fast forward/rewind of the currently playing track!