  Following various LHC indications for new scalars, an interpretation of these
is given in terms of the Georgi-Machacek (GM) model. On top of the confirmed SM
Higgs boson, there are indications for a light Higgs at 96 GeV, for a CP-odd
boson at 400 GeV, A(400), and for a heavy Higgs boson at 660 GeV. An extension
of the GM is needed to interpret the fermion couplings of A(400). Potentially
interesting deviations are also observed in the ttW cross-section measurement,
which naturally fit into this picture. None of them crosses the fatidic five
s.d. evidence but the addition of these effects, consistent with GM, suggest
that there are good hopes for solid discoveries at HL-LHC, which should boost
the motivation for future machines. The GM model also provides a useful
framework to estimate the rates expected for various channels at an $e^+e^-$
collider, together with the range of energies needed. ILC performances are used
for a quantitative estimate of these rates for the prominent channels.
