It appears that it's built as an app that crawls the graph, zips up all your media, photos, videos, etc. Once unzipped, it seems to be html based, browsable format.

Based on this I think its safe to say that even without explicit APIs you could easily whip up some parsers, accept one of these zip files, and pull all the data into your own app.

Here's the live stream if you don't want to take TC's word for it: http://apps.facebook.com/facebooklive/