  In this presentation, we discuss recent key topics in theoretical analyses of
CP violation in benchmarks decays of the $B$ meson. We provide the most updated
values of the mixing phases and discuss the importance of including the penguin
contributions in their studies. Exploring intriguing patterns in purely tree
decays, interesting new methodologies can be developed and applied. New data
related to the CP asymmetries of key modes like $B^0_d \to \pi^0 K_S$ and
$B^0_s \to K^+ K^-$ lead to interesting results. The new $R_{K^{(*)}}$
measurement, compatible with the Standard Model, can still allow for
electron-muon symmetry violation through new sources of CP violation.
