Yahoo! spoke with The Avengers writer/director Joss Whedon at the Iron Man 3 premiere last night and managed to get some good details about The Avengers 2 out of him.

“I have finished a draft and I’m redoing it now. I think it’s in really good shape. We’re in a very good place,” he said.

When they asked him if he felt pressure to top the first film, he offered this response.

“I try not to think of it as topping it. I try to think of this as its own movie. Sometime yeah, I feel pressure and by the way, Shane (Black) not helping, Iron Man 3 not helping, because I saw this and man he really got it right. But when you’re in the story and you’re dealing with these characters that you love, that everybody loves, when you’ve got the new characters sliding in next to them it’s very exciting. Then I don’t feel pressure, it’s like I’m reading my favorite comic.”

New characters you say? Whedon offered a few more details about who these might be.

“I’ve got these two characters, two of my favorite characters from the comic book, a brother-sister act. They’re in the movie.”

The only brother-sister combo that we can think of is Quicksilver and the Scarlet Witch. While Whedon could just be having fun at the expense of the online community, it is likely that these characters could appear in the sequel as Marvel shares the rights with Fox.

Overall though, Whedon says he is having fun with the sequel.

“It’s going really well, eventually someone will explain to me that it’s not and pull me out of my bubble. I’ve been writing and meeting with actors and we’re starting to storyboard, all the preliminary processes. This is the part where it’s all still fun.”

The subject of the upcoming Agents of S.H.I.E.L.D. series also came up.

“Well there’s no update in terms of they haven’t said ‘Go and make many of these for it shall be on the air.’ We’ve finished the pilot, Agent Coulson is in it, and we will explain why in the pilot. It is wonderful and he is phenomenal in it. We should find out in the very near future whether or not everyone else gets to enjoy it as much as we already have.”

Check out the full video below and let us know what you think about these teases for The Avengers 2.