I've been looking around for the last couple of days, and the only documents I can confirm were a part of that 400 page disclosure that I've been able to track down are the 49 pages of text messages, which can be found here:
http://www.palmbeachpost.com/multimedia/archive/00431/Dippolito_Texts_pag_431875a.pdf
http://www.palmbeachpost.com/multimedia/archive/00431/Dippolito_Texts_pag_431877a.pdf
http://www.palmbeachpost.com/multimedia/archive/00432/Dippolito_Texts_pag_432098a.pdf
http://www.palmbeachpost.com/multimedia/archive/00432/Dippolito_Texts_pag_432099a.pdf

I also found the following documents, which may or may not have been part of that 400 page release:
Probable cause affidavit:
http://i2.cdn.turner.com/cnn/2009/images/08/06/dippolitopc.pdf
Petition for dissolution of marriage:
http://i2.cdn.turner.com/cnn/2009/images/08/10/petition.for.dissolution.of.marriage.pdf
A complaint document about the couple's house:
http://alt.coxnewsweb.com/palmbeachpost/pdf/local_news/2009/DippolitoComplt.pdf
Dalia's conditions of release:
http://i2.cdn.turner.com/cnn/2009/images/08/14/conditionsofrelease.pdf
A press release outlining the basic facts of the case, dated August 5th, 2009:
http://i2.cdn.turner.com/cnn/2009/images/08/06/9038937dippolito.pdf
Information about Michael Dippolito's old companies can be found by searching his name in the following site (look under "document searches", "corporation|trademark|LLC|LP", then "inquire by officer/registered agent name"):
http://www.sunbiz.org/
Marriage documents and more real-estate documents scanned here:
http://starcasm.net/archives/11755

This video discusses some of the contents of the 400 page release:
http://www.cbs12.com/video/?videoId=84787842001&lineupId=1143359274&play=now
I've been trying to find the notebook pages they mention, but haven't had any luck with them. The video does show some examples of what they were like, if you're interested.

The description of the release said it included records and video, which makes me wonder if maybe some of the documents might have been transcripts. Either way, I'll include some links to the original videos in case you haven't seen them.
Dalia's secretly taped conversation with her friend the informant, discussing obtaining a hit man:
http://www.youtube.com/watch?v=udM2m2NwvU4
Video of Dalia's reaction upon hearing about her husband's "death" at the fake crime scene:
http://www.youtube.com/watch?v=cFhnSej1fQY
Police interviewing Michael Dippolito:
http://www.youtube.com/watch?v=Srk3muI0kq0
Police interviewing Dalia Dippolito:
http://www.youtube.com/watch?v=y3sBdoQUN1Q