It is about rendering colors of the scene within the bounds of physical limits of display device color space.

Rendering to the display device screen uses perceptual intent: a conversion of color space of the display under some assumptions about screen viewing environment etc. [1]

With better models we can improve this conversion. Article mentions that large color differences are not perceived as acute as the current models (Riemman etc) suggested so new model could boost the color difference to achieve that higher acuity.

[1] https://blog.colorgate.com/en/rendering-intent-explained