Iris 1.5.2 has released for 1.18.2, 1.19.2, and 1.19.3.
This release adds support for Sodium 0.4.9 and slightly improves performance, alongside fixing a few bugs with PBR and signs.
⬇ Download the release here: https://irisshaders.net/download.html
A more detailed changelog is available for those interested: https://github.com/IrisShaders/Iris/blob/1.18.2/docs/changelogs/1.5.2/full.md