According to Apple’s release notes, macOS 12.4 provides the following improvements:
- Apple Podcasts includes a new setting to limit episodes stored on your Mac and automatically delete older ones;
- Support for Studio Display Firmware Update 15.5 (also available as a separate update) that refines camera tuning, including improved noise reduction, contrast, and framing
You can download macOS Monterey 12.4 by going to System Preferences —> Software Update. And if you’re not running macOS Monterey, you can obtain macOS Big Sur 11.6.6 via the same process. The upgrade provides bug/security fixes and speed improvements.