Also ... while I can't speak about anything officially ... the only reason that NTNR was "spoiled" in its entirety is because they "pre-released" copies of it at Essen. So folks had the entire box to share with the interwebs.
I don't know what AEG has planned for previews/spoilers moving forward, but I wouldn't expect to see all 21 cards of every Saddlebag before its launch date. Leave something to the wondering after all.
If I remember correctly, 11 cards were officially spoiled and the remaining 10 where spoiled from the Essen pre-release.
The truth is I don't really want to have everything spoiled before the release date, I like discovering something upon buying an expansion. Actually, since I live in France, I'll never get an expansion before the full set is spoiled because of the delay between the official US release and the date we can get it here (NTNR just arrived at various stores).