John,
I don't think it's too likely, but I'll look into this for you later in the week (when I'm in Berkeley). In the U.S., Warner is now farming out the distribution of Teldec and Erato to Naxos, so they are expanding the number of titles that will be available to Amazon and retailers in the U.S. Warner is going to retain distribution of Nonesuch, which is considered a domestic label anyway. I'll get back to you on Thursday or Friday.
If you want the Inbal cycle, then you better be pretty curious about first versions. Personally, I think the Tintner cycle on Naxos is far more interesting (which also uses a lot of earlier versions).
Barry