It was structured, no luxuries and an intensive experience that lasted for 180 days, meant to punish past and deter future violations.

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Sir Ian McKellen and Sir Patrick Stewart will return for Days of Future Past, which will time travel between different eras, more than 13 years after first taking on the roles of mutant adversaries.

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And Simon Kinberg, author of the recent Sherlock Holmes franchise starter and the upcoming X-Men: Days of Future Past, will also be involved as either another write or producer, or maybe both.

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X-Men: Days of Future Past is in pre-production, and director Bryan Singer is getting his ducks in a row.

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These days, the past is increasingly less predictive, the future is almost unimaginable, and the present exists for about a nano-second.

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