@nqyringmind,
The sexual molestation allegation has nothing to do with the case against Zimmerman. It won't be included. And it's not going to result in any other charges being brought against him.
But the same woman also claims that the Zimmerman family was racially biased. And that might come in if the state wants to pursue the idea that Trayvon Martin was racially profiled by Zimmerman--although I really don't think they will do that.
http://www.huffingtonpost.com/2012/07/16/george-zimmerman_n_1676729.html
I'm not sure the witness statement could have been blocked because of Florida's Sunshine Laws regarding open government records--it was evidence collected by the state, even if it's evidence that won't be used.
Neither the state nor the defense really wanted the evidence in this case released to the public. It was the media who pressed for the release of the evidence, under the Sunshine Laws, and they won.