The Palestine Papers
You can read about it here.
At this time it appears to be the Palestinian Arab version of events, so whether they will be corroborated is an open question. They certainly seems to indicate that PLO negotiators have gone beyond their public statements in their offers. They appear to show that the issue of Jerusalem is essentially not solvable. For example, while the Palestinian Arabs think that their offer of letting most Jewish areas of Jerusalem stay in Israel's hands was most generous, even the most left wing Israeli government cannot consider evicting Jews from Maaleh Adumim or even Har Homa.
The Arab backlash that is likely to occur against the PA/PLO from these documents' release may be significant. JPost has more. Someone in the PLO obviously leaked them so this indicates a severe fissure within their ranks, despite (or more likely because of) Mahmoud Abbas' political strengthening of his leadership.
The Israeli backlash may be significant as well, although Olmert and Livni will be able to deny details since it is not their version of events.
PA denies Al Jazeera report
Palestinian negotiators denied the Al-Jazeera TV channel's report that revealed alleged concessions the PA made to Israel. The chief Palestinian negotiator in the 2008 peace talks, Ahmed Qureia, told The Associated Press that "many parts of the documents were fabricated, as part of the incitement against the Palestinian Authority and the Palestinian leadership."
He denied making an offer about the Jewish enclaves in east Jerusalem, claiming that Israel refused to discuss the issue. (AP)