There are actually more books, but half of them are French, some of the others are Canadian-only, or iTunes-only, or both, and anyone in Canada can see them here:
Get started with great free books/Commencer avec des livres gratuits, so they're kind of low priority in the posting queue for the next few days since this will probably be at least a week-long promo like the Free eBook of the Week that it seems to have replaced.