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macOS Catalina 10.15.3 Now Available to The Public – Includes Pro Display XDR Optimizations, More

macOS Catalina 10.15.3 Now Available to The Public – Includes Pro Display XDR Optimizations, More

Apple today released macOS Catalina 10.15.3, the third update to the ‌latest Mac operating system that was released in October. The new version comes more than one month following the release of macOS Catalina 10.15.2.

macOS Catalina 10.5.2 can be downloaded for free from the Mac App Store via the Update feature in the System Preferences app on compatible Macs.

macOS Catalina‌ 10.15.3 includes code that suggests a new “Pro Mode” for the Mac. The new mode appears to be an optional setting that overrides fan speed limits and energy-saving restrictions to improve a Mac’s performance. While the code says that apps “may run faster,” the new mode could decrease battery life while increasing fan noise. It isn’t clear when Apple might enable the “Pro Mode” but the code is there.

The ‌macOS Catalina‌ 10.15.3 update improves the stability, reliability, and security of your Mac, and is recommended for all users.

The update:

  • Optimizes gamma handling of low gray levels on Pro Display XDR for SDR workflows when using macOS
  • Improves multi-stream video editing performance for HEVC and H.264 encoded 4K video on the 16-inch MacBook Pro (2019)

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