The only thing official are from Adrian Belew's Facebook page:
"multi-tasking on the plane by writing liner notes for a new Zappa release.
oh, I should have mentioned it a new box set all 6 shows from halloween at the palladium in new york, 1978. 18 hours worth!
it's the shows the Baby Snakes movie was made from."
And then two quotes on how divided the Zappa community is by the Ahmet - Dweezil stuff.
"speaking of nasty: I devoted a few more hours today to the writing of the zappa liner notes and I'm now having second thoughts.
already I am reading divisive and somewhat nasty remarks from the hard core zappa types.
maybe I should just cater to my fans, who by comparison are a much friendlier bunch.
it seems like an ugly time to be involved in frank's universe.
I only agreed to write something because of my love and respect for the man himself and what he means to my life.
damned if you do, damned if you don't."
"...another tenet I have always held: once you commit there is no choice to be made. at some point soon I will finish the liner notes just as I committed to do.
but I want it publicly known it's only out of respect for Frank and the rest of us who made those performances happen. I have nothing to do with the current Zappa universe. my loyalty is only to the memory of Frank. I owe him a debt but I owe no one else."
So it seems that we actually do get all 18 hours worth of music. I could see them releasing a double album of all highlights, like Yes' 14 cd set of 7 the same shows. (although that actually had the same setlist every night, so that made a best of easier) Or even separate volumes and one big set.
But we'll have to wait and see.