Buzz, are you refering to "History of Dark Shadows 1966-1967"? I believe it was published by the Fest, it covers the first year of the show, and I paid way to much for it on eBay. I've been fearing that this new one might be a retitled reprint
Well, I have
History of DS 1966-67 and this book but haven't actually compared them. But just thumbing through this new book it appears to be the same as they are giving episode summaries of those pre-Barnabas eps (the last one being the ep where we see B's hand clutchig Willie's throat out of the coffin). There's a nice section after the summaries w/pictures (behind the scenes and PR shots mostly), floorplans of some of the sets and memo's from ABC to DCP etc...
So I'm gonna say it is a re-print, but it may be also an
updated version of
History.