I hope this sounds reassuring, which is what I mean, and not argumentative, but this is really not a long time for LE/the state to take in bringing more charges in a serious case like this. The Anthony family antics are hard to take, but a day is coming when Casey most likely won't be feeling like high-fiving anyone, unless her cell mate becomes her new BFF. Maybe she's overjoyed today that she soon might have something to put on her resume: convicted felon. Let's hope with her! Remember the smug and maddening Petersons, and think about where Scott is passing his time today.
As to leaks, I agree there haven't been so many, given the level of interest in this case. A lot of information came out because of media requests and a really liberal open records law in Florida. Other information was most likely given to the family and even the defendant in regard to the immunity offer, so it might as well be public. I think it's good LE is just working, and not trying the case in the media or telling more. It's a wonderful contrast to the Anthony behavior. Casey got herself a month of time passing between Caylee's disappearance and discovery of that. It isn't an easy case. But I think they'll make it.