I've already paid for, downloaded, and read the ebook. Zero History pulls together characters and story arcs from the two preceding novels in an interesting way that, while divergent from Gibson's previous body of work, stands on its own and creates a well-polished book trilogy. Personally, I liked it, but maybe that's because I've always liked Gibson's work whether or not it's in the vein of cyberpunk. Nonetheless, Gibson's story revolves once again around fashion, socio-economic trends, the inscrutable omnipresence of Hubertus Bigend and Blue Ant, as well as the people tasked with (or rather influenced into) finding Blue Ant's next big thing. I did find that some of the loose ends in the plot were a bit sloppily cleaned up with at least one glaring deuce ex machina moment thrown into the story, but overall Zero History is wholeheartedly in theme with Gibson's take on more modern-day fiction. I think it'll be considered another of his love-it-or-hate-it works.
Just my two chyen.
Grim.
Side note: Gibson in an interview once said that the future is too uncertain for him to continue writing near-future fiction that's set more than ten or twenty years out so for the foreseeable future he's sticking closer to home with current fiction or fiction that takes place in the recent past.