If you remember the end of Batman v Superman, things weren't looking so great for ol' Supes...leaving Batman and Wonder Woman believing the last son of Krypton had bit the dust for good. (Also leaving audiences with a glimmer of hope everything would be fine with a shot of floaty dirt, and Cavill's ongoing contract with the studio.)

Cavill's sneaky 'gram sent fans into a wild fury of theorising about what this could mean for the Man of Steel.