  With the first data being recorded at Belle II, we are at the brink of a new
era in quark flavour physics. The many exciting new opportunities for Belle~II
include a full angular analysis of inclusive ${\bar B \to X_{s} \,
\ell^+\ell^-}$ which has the potential to reveal new physics, in particular by
its interplay with the exclusive $b \to s \ell^+\ell^-$ counterparts studied
extensively at LHCb. In this paper, we present fully updated Standard Model
predictions for all angular observables necessary for this endeavour. These
predictions are tailored to Belle II and include an elaborate study of the
treatment of collinear photons which become crucial when aiming for the highest
precision. In addition, we present a phenomenological study of the potential
for Belle II to reveal possible new physics in the inclusive decay channel,
both in an independent manner and in combination with exclusive modes.
