Patch 1.005 is small, but its impact is significant: it modifies the in-game graphics of the Insomniac title. Specifically, as the developers state in the changelog, the update offers “improvements to ray tracing and stability”.
For comparison, we will have to wait for expert analysis. For now, it is difficult to determine how substantial the changes introduced by the patch are. In any case, ray tracing in Marvel's Spider-Man and its sequel, Marvel's Spider-Man Miles Morales, is widely regarded as one of the best implementations, so the update should only improve the quality.
As a reminder, Marvel's Spider-Man for PS5 was previously only available by purchasing the Ultimate Edition of Marvel's Spider-Man Miles Morales.