Disney star Demi Lovato had recently been linked to a role in Joss Whedon's Avengers Movie but now that seems to be a big fat ugly false fact. Despite that THR report that Whedon and Marvel are actually still looking to cast another significant female role. The Wasp is currently the favorite.
Eva Longoria was previously attached to the role some time ago, although that rumour never came anywhere close to being confirmed. The Black Widow [Scarlett Johannson] is currently the only big female role in the movie, which is set to shoot in April 2011, ahead of a summer 2012 release. The Avengers also stars Robert Downey Jr, Chris Evans, Jeremy Renner, Mark Ruffalo, & Chris Hemsworth.