This book sees the culmination of the Romulus mystery. I`m not sure if it was planned this way, but it seems as though all of the events of the past three years or so have been building to this moment.
Not only is Romulus`master plan revealed, but Romulus himself is revealed for the first time. Some questions still linger, like, "What about all of the Wapon X Agents that were killed? Are they really gone?" Probably not, being nobody dies in comics anymore (unless written by Loeb!)
This appears to be the start of a very interesting conflict for Wolverine.