Man of Steel 2 is still in the very early stages of development, but we know that director Zack Snyder is returning to the helm, with David S. Goyer currently working on the screenplay.

When asked what ideas he has for the follow-up, Zack Snyder said that he hasn't had a chance to speak with Warner Bros. yet, since he is still doing press for the international release.

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"I'm going to be a hundred percent honest with you, I haven't yet gotten to speak to the studio about all these awesome details (because I've been overseas on the junket). So my hope is, when I get home I can sit down with everyone and it'll be like 'Okay, so what are we going to do?.. We need to do something...'"

He teased that the explosive nature of Man of Steel makes it a hard act to follow for a sequel.

"We almost destroyed the world last time, now what!?"

When asked if Man of Steel 2 leads into Warner Bros.' DC superhero ensemble Justice League, the filmmaker offered this response.

"I really wanted to expand the DC Universe and I really wanted to make sure, in Superman's world, that all that is a possibility."

He also addressed complaints from the fans that Lex Luthor wasn't in the first movie, but reveals that the villain is most definitely a part of this world.

"People have been like 'there's no kryptonite in the movie!' and 'there's no Lex Luthor in the movie!', and by no means am I saying those things don't exist, I'm just saying he didn't run into them here [this time]."

We reported earlier this week that Mark Strong is reportedly being sought to play Lex Luthor in the follow-up, but that has not been confirmed by Warner Bros. yet.