[cycrutchfield]

Not true as of Watch OS 6, I believe.

I'm referring to streaming via cellular. Not sure about playing offline via non-cellular though, I haven't looked into that.

[apazzolini]

I searched a bit - I think you're correct, and also offline support looks to be in beta in the Swedish version of Spotify, so maybe it's actually coming at some point.

[Izikiel43]

I'm in Canada and I got a beta for wifi streaming from the watch, where did you find about the offline beta?