Yeah, the last I heard on this, which was maybe 9-12 months ago, was that Rhino was getting or had gotten the rights to the JGB recordings as well as the GD stuff and would be releasing them as they saw fit. Just like the "official" Jerry site, it appears all the JGB recordings are now in mothballs. What a shame.
And, if you didn't get copies of the Pure Jerry releases, they are now quite expensive on any of the auction sites. I picked up the ones I was missing a couple of years ago and still overpaid for them.