Yes, I would still class it as unreleased. If a show was broadcast on a radio station back in the day, it wouldn't have been classed as "released". I don't see how Sirus is any different to this. It's not available on demand, just aired at a certain time. It's "Unreleased" until it's on Spotify etc, or released on CD or Vinyl in my opinion.

Also some of the concerts are given to the fan club before they air on Sirius, so that would definitely count. The fan club got the exclusive, as they had it first. Exclusive does not mean it will never appear anywhere else ever.

Like you said it's a grey area, but techncially they are delivering what they promised now. The certainly weren't for the first year or so...