I know that MadonnaTribe is a fansite. Nonetheless, almost all of their exclusives have later been confirmed by official sources, such as the full setlists of Madonna's two latest tours and titles of 5 songs off Madonna's Hard Candy album. As of now, their news item on the tracklisting is accessable from their front page, as a top news story.
However, as I've already commented, the tracklisting hasn't been officially confirmed, and therefore, I agree that it shouldn't be included in the article itself for the moment.
As for the release date, Warner Music Switzerland have updated their release plan to list a Swiss release date of September 18, 2009, which indicates an international release date of September 21. However, Madonna.com still mentions September 29 as the release date. 87.239.71.35