MAN OF STEEL is putting it's own spin on the Superman story in many small ways. A change to a major story element may be on the way, though.
EW's MAN OF STEEL preview in their Summer Movie Guide is anchored by an interview with Jeff Robinov, president of Warner Bros. Pictures Group. One can assume, then, that the plot summary was provided by WB.
In the article, the major conflict of the film is summed-up as follows:
"Clark Kent's heroic tendencies would rise to the surface only when the threat was great enough. It would have to be a global menace — one that might also trigger an internal conflict about whether he belongs on Earth even as he yearns to be among his own kind. That's what pits him against General Zod (Boardwalk Empire's Michael Shannon), a Kryptonian tyrant who wants Clark to join him back on Krypton, which would mean abandoning his post as defender of the weaklings of Earth."
Krypton still existing? This would be a major deviation from the origin story that fans have known for decades, where Superman's parents send him to Earth just before their home planet is destroyed.
Is Zod bluffing, in order to lure Superman into a trap or gain him as an ally? Has Zod rebuilt Krypton? Is Zod planning to rebuild Krypton?
If true, how could this will affect the storyline? Are his parents still alive? What is Krypton like today? How does this affect Superman and his sense of responsibility to Earth?