Confirmation comes from a couple of places, with SuperHeroHype forums revealing the details of the extra scene, while Unleash The Fanboy has a screen capture of what unfolds which you can click on over there to check out (lest we incur the wrath of Marvel). As for what the scene contains? Well, you can head over to those sites if you really want it spoiled, but we figure it's probably best to experience it fresh when you're in the theater, which many of you will be (and should be) this weekend. And it appears this will be for North American audiences only, so screw you, rest of the world!
As you already know "The Avengers" opens on Friday. And yeah, keep your butt in the seat until the very, very end.