I really enjoyed the first book, vN, but this one didn't work for me. Doesn't help that this has a different POV (Javier, rather than Amy). The author's said iD is like her version of a James Bond story - complete with casinos, cocktails, and a supervillain. But I just couldn't connect with the story, or the characters.
Book 3, reV, is due out late in 2015. Hopefully it's an improvement upon this installment.