His backstory is unchanged in Into Darkness. In this timeline he was revived by Marcus instead of Kirk (and his people held hostage), and he was used to design weapons for use against the Klingons.Pretty sure everything. I only watched it once in theaters and don't have a desire to watch it agan, but I believe that Khan in this silly timeline was a starfleet section 31 special soldier. You should watch the episode "Space Seed." Of course Khan cared about his crew and his wife was a starfleet officer.
If he cared about his people as much in Wrath of Khan as he did Into Darkness, he wouldn't have let them all die. In that movie, his hatred of Kirk outweighed everything else.