This isn’t recent news, but I hadn’t seen this before. Foucault’s preparatory notes to Les mots et les choses (The Order of Things) are available online at La bibliothèque de Foucault : Guide des papiers de travail de Michel Foucault.
The page reproduced left and here is on Kant’s ‘Des différentes races humaines’ from 1775. Thanks to Benoît Dillet, whose excellent review of the L’Herne volume on Michel Foucault alerted me to this resource.
Les mots et les choses isn’t within the time period I’m working on for the current book, But if it were, this would be an invaluable resource.
Perhaps material from the later years will become available in time for a second edition…