In LARB, the correspondence with Fritz exposed; a translation of the Die Zeit review.

[T]he family has agreed to release an abridged version of the letters, written between 1930 and 1946, in a newly published volume called Heidegger und der Antisemitismus (“Heidegger and Anti-Semitism”) (Verlag Herder, Freiburg 2016). Inside these pages one finds an unvarnished picture of the philosopher’s political disposition. In the Black Notebooks, a kind of diary of thoughts, Heidegger approached anti-Semitism from a philosophical remove, but these personal letters published expose him as a bona fide, unrepentant anti-Semite.