The subject of this essay is the "Heraclitean" flux in the Theaetetus and its role in the discussion of the first definition of knowledge, particularly in light of the flux doctrine that Plato propounds in the Timaeus. There are two principal interpretive approaches to the argument in this part of the Theaetetus, and the question whether its theory of flux is, to any appreciable degree, Plato's own view is perhaps the central issue dividing the two camps. Though the Timaeus has been cursorily cited by the one camp, and as cursorily dismissed by the other, I believe that a closer comparison of the two dialogues can be genuinely helpful in adjudicating the dispute over how best to read the Theaetetus.
Hunt, David P., "Form and Flux in the Theaetetus and Timaeus" (2003). The Society for Ancient Greek Philosophy Newsletter. 359.