The way I read this is that "an" introduction from Stockholm is being presented here for the first time, so perhaps it's a second introduction after a break or some other different introduction. As you note, Losin knows that there was an introduction before, so he may be talking of an additional one introduced for the first time.
I sure wish we had a definitive statement on the legality of these recordings in previous releases in the US. I know they are legal by European standards, or assume so. But only the Dragon combined Coltrane/Stitt set has been legally for sale in the US previously to my knowledge, and I had been told early in this century that this was because the estate had received further compensation. Perhaps there is legal reasons (reasons beyond pure greed) why the estate feels that past compensation does not mean that subsequent releases are free to be distributed without new compensation.I get the feeling that the estate and Sony don't recognize the legitimacy in this market of the Paris and Copenhagen recordings--even though they are for sale here and there (and nearly everywhere). Recordings technically legal in Europe and not in the US can be bought easily in the US, so I'm not sure what any hoopla from the estate or Sony is about, but if this Bootleg Series inclusion is a way for the estate to make some money from them and then be open to further Bootleg Series releases. . . I'm supporting it.