In NDPR, William McNeill reviews Duane Williams's Language and Being: Heidegger's Linguistics.

He tends to write as though Heidegger's many texts form a homogenous corpus from which a largely consistent or systematic view of language could be discerned. And the same holds with regard to Heidegger's thinking of Being, and especially of the ontological difference. When the book concludes with the words "And what is? Being is.", it remains rather unclear why this would not be a forgetting of the ontological difference, that is, of the difference between Being and beings that Heidegger had earlier insisted upon.