  The IceCube Neutrino Observatory opened the window on neutrino astronomy by
discovering high-energy astrophysical neutrinos in 2013 and identifying the
first compelling astrophysical neutrino source, the blazar TXS0506+056, in
2017. In this talk, we will discuss the science reach and ongoing development
of the IceCube-Gen2 facility---a planned extension to IceCube. IceCube-Gen2
will increase the rate of observed cosmic neutrinos by an order of magnitude,
be able to detect five-times fainter neutrino sources, and extend the
measurement of astrophysical neutrinos several orders of magnitude higher in
energy. We will discuss the envisioned design of the instrument, which will
include an enlarged in-ice optical array, a surface array for the study of
cosmic-rays, and a shallow radio array to detect ultra-high energy (>100 PeV)
neutrinos. we will also highlight ongoing efforts to develop and test new
instrumentation for IceCube-Gen2.
