According to various sources Amber Heard is either in negotiations for the role of Chenault or has indeed secured the part. Here is a little report from firstshowing.net :
Amber Heard will play the “unattainable” romantic interest Chenault, whom is the girlfriend of “a slick PR consultant named Sanderson” that becomes entangled in a corrupt hotel development scheme with Kemp. The role of Sanderon hasn’t been cast yet, or at least, they haven’t publicly revealed a name. Heard’s role apparently has quite a bit of nudity, but if you haven’t heard, she’s pretty much nude all throughout The Informers, so this wasn’t a big issue for her. I didn’t see The Informers, so I can’t speak for her acting abilities, but obviously with the roles she’s getting, it’s starting to seem like she’s the next big thing.
That is about it for now folks,