The "story" of 4.0.12 is defined by three major breakthroughs:

The software would analyze the image, identify skin tones, and create a mask instantly. Version 4.0.12 refined this so it could distinguish between a beige cheek and a beige wall behind the subject with much higher accuracy.

This specific point-update was crucial for compatibility. As Photoshop transitioned to more GPU-heavy processing and Apple moved toward its own silicon/modern OS architectures, 4.0.12 ensured that the plugin wouldn't crash during a heavy batch-render. The Impact