Avengers film new Scene after Premier – Ant Man Stinger?

At the World Premier red carpet screening of The Avengers all the heroes were in attendance and then the impecable Robert Downey Jr happened to let slip that after the screening they were all headed off to film one more scene that was not in the screening they were about to watch!
Collider reports:
Robert Downey Jr. dropped this little nugget: “We are shooting one more scene. Tonight. Not kidding.” Update: Mark Ruffalo has confirmed Downey Jr.’s comment.
And it looks like it wasn’t his sarcastic buzz generating off the cuff comment. They in fact DID head to film another scene.
Everyone is tight lipped about what it might entail, and who might be involved, but then Edgar Wright – the director attached to make the longsuffering Ant-Man feature film (another member of the Avengers) let slip on Twitter that he was back behind the camera – THAT NIGHT!
@edgarwright Tweeted:
I just got behind the camera for the first time in 2 years.
Very convenient for him to make such a statement RIGHT on the heels of finding out they were filming one last scene for The Avengers.
Likely a Stinger clip for after the credits? Introducing Antman in some way?
What are the odds that Edgar Wright, who attended The Avengers red carpet screening last night would just happen to be reporting on set to film something at the same time that the cast of The Avengers suggested they were reporting to set for one last scene yet to be included in the film?
It adds up to me! (though not at all confirmed and is entirely wild speculation)
If it is an Antman tease, I can’t wait to see how they do it!
I don’t think it has anything to do with Ant-Man. Or Wright. Wright recently launched ‘Brandon Generator’, and it’s been said that the actors were joking, and that there are no new scenes. If Avengers sting anything, it will be in relation to ‘Thor 2′ or ‘Iron Man 3′.
Don’t be pissing on my wild speculation with LOGIC and COMMON SENSE!
Let me have this Ant-Man fantasy for a couple days before it gets publicly debunked (and likely already has)
Generator is an animated webseries effort with html5 moving illustrations – which looks neat but doesn’t require Wright behind the camera.
So…. still clinging!
Word around the campfire is Nathan Fillion was seen with Edgar that night also!!!!!!!!
a man can dream cant he?
There is a probability that it may be a Hank Pymn tie in through he Vision .
Wow. This was way off, eh?
Turned out to be inaccurate, yes. But it was still very plausible.