I understand that, spinning out of gossip from the Marvel Creative Summit this last week, that next year there is a plan at Marvel to kill Wolverine. In a way that gets round his healing factor and his seeming supernatural deal to keep coming back from the grave.
That it may involve the effects of time travel on his body as a result of the Age Of Ultron upcoming series. And also the idea that, even given his reputation as a bloodthirsty killer, this time he may have gone too far…
This is currently just rumour and gossip, but Wolverine will be probably playing a time travel role in the X-Men Days Of Future Past film next year. Who knows, maybe it will have further implications?