The sentence “Applying Bayes’ rule for Gaussians, as in Section 4.6.4.1, we find that the corresponding posterior is given" appears in 4.6.4.1 is clearly an error itself. And Bayes’ rule for Gaussians originally appears in Section 3.3.1, while the form cited in Section 4.6.4.1 actually corresponds to the formulas in Section 3.3.3 (formulas 3.55, 3.56, and 3.57).
The sentence “Applying Bayes’ rule for Gaussians, as in Section 4.6.4.1, we find that the corresponding posterior is given" appears in 4.6.4.1 is clearly an error itself. And Bayes’ rule for Gaussians originally appears in Section 3.3.1, while the form cited in Section 4.6.4.1 actually corresponds to the formulas in Section 3.3.3 (formulas 3.55, 3.56, and 3.57).