It seems that Katniss is pretty much cast. Jennifer Lawerance is the SUPER front runner, beating out a slew of other amazing young actresses to grab the role. The pushing point: her age. They want her so they can cast a slightly older group of boys to via for her attention. This isn't official but it's pretty much a sure thing according to most websites. I don't mind her. They'll have to dress her down but I think she'd be pretty good!
In a surprise turn of events, it turns out that Josh Hutcherson really wants the part of Peeta and has auditioned for it. Though he hasn't been cast yet, I think he'd be a really great choice. He's not too model-like and he's got the perfect build for the part. He totally fits the word "stocky". Plus, he really wants it. According to Ology, he stated "I love Peeta... The character is so much who I am—self deprecating, a people person. And he’d be such a great character to play! Like in the third book? Oh my God". This is perfect! I want Peeta to go to someone who is a fan of the books and characters.
Haven't heard much on Gale lately but last time he was talked about, it was said that Thomas McDonell was being considered for the part. I think he'd pretty much be perfect. This is exactly how I pictured Gale and I like the difference between him and Josh Hutcherson.
So that's all I know about casting thus far but I have to say, I'm pretty happy with these latest announcements.