  In this short presentation I emphasize the increased importance of kaon
flavour physics in the search for new physics (NP) that we should witness in
the rest of this decade and in the next decade. The main actors will be the
branching ratios for the rare decays $K^+\rightarrow\pi^+\nu\bar\nu$ and
$K_{L}\rightarrow\pi^0\nu\bar\nu$, to be measured by NA62 and KOTO, and their
correlations with the ratio $\varepsilon'/\varepsilon$ on which recently
progress by lattice QCD and large $N$ dual QCD approach has been made implying
a new flavour anomaly. Further correlations of $K^+\rightarrow\pi^+\nu\bar\nu$,
$K_{L}\rightarrow\pi^0\nu\bar\nu$ and $\varepsilon'/\varepsilon$ with
$\varepsilon_K$, $\Delta M_K$, $K_L\to\mu^+\mu^-$ and $K_L\to\pi^0\ell^+\ell^-$
will help us to identify indirectly possible NP at short distance scales. This
talk summarizes the present highlights of this fascinating field including some
results from concrete NP scenarios.
