Earlier today I found out that Anthony Mackie was in talks to portray Falcon in Cap 2 (yet some say it's official), here's a link for the thread: http://www.comicvine.com/falcon/29-1451/anthony-mackie-in-talks-for-falcon-in-captain-america-2/92-681083/
Could this appearance lead to Avengers 2? I mean Falcon does play a pivotal role for Cap and you can consider him a REAL Avenger... If it wasn't Marvel's plan just to make their Avengers sequel diverse. Though, I am happy to know that another character will be showing up with actual powers like Thor - but I'm worried they might alter his powers a bit and make him able to beat the crap out of Thor like they did with Iron Man - Though, then again, that's if Falcon does receive enough attention to be brought to a sequel - but think about it: All of a sudden they cancel Avengers: Earth's Mightiest Heroes and bring in a new series Avengers Assemble with the movies line up... And Falcon??? It's too obvious, this is just like the Avengers Assemble limited comic series that's out, where I think it was issue 4, 5 or 6 (I don't even know) and at the end the Guardians of the Galaxy appear to help fight Thanos - 2 or so weeks later after the release of that issue, Kevin Feige announces a movie... I guess they want people to really be familiar with these characters.