I imagine it'd be a CGI affair, I can't imagine something like ME translating well to live action. Therefore, it'll likely have the same voice actor.
So, considering how much I hate the sound of the male VA, and the likelihood that a film would star him over FemShep, I'm not that excited, really.
Unless, of course, I'm wrong, and they use FemShep for some reason. In which case, it can't come quick enough.