I've not read it, but this one looks more modern: https://www.amazon.com/gp/aw/d/B01ITHITEO/ref=mp_s_a_1_3?ie=UTF8&qid=1473970124&sr=8-3&pi=SY200_QL40&keywords=metasploit&dpPl=1&dpID=51wlVtRJzGL&ref=plSrch