Board Thread:Questions and Answers/@comment-1140578-20140607201418/@comment-267885-20140607204134

He supposed to have bone claws in future and in the past. Actually, I think that a choice of the producers because audience want to see Wolverine with his iconic adamantium claws but director Bryan Singer says that it's possible that Magneto help Logan to regain adamantium claws somewhere between the post-credits scene of The Wolverine and the begginning of X-Men Days of Future Past ;)