Not sure why I'm being downvoted. Here's the segment where Manley explains this: https://youtu.be/shcj7MUK5BU?t=828 and this is also the section where Manley explains Artemis III is not going to the moon so it won't actually be testing this change.

And from an older NASA explanation: https://www.nasa.gov/news-release/nasa-shares-orion-heat-shi...

> Engineers already are assembling and integrating the Orion spacecraft for Artemis III based on lessons learned from Artemis I and implementing enhancements to how heat shields for crewed returns from lunar landing missions are manufactured to achieve uniformity and consistent permeability.