  IceCube DeepCore, the existing low-energy extension of the IceCube Neutrino
Observatory, was designed to lower the neutrino detection energy threshold to
the GeV range. A new extension, called the IceCube Upgrade, will consist of
seven additional strings installed within the DeepCore fiducial volume. The new
modules will have spacings of about 20 m horizontally and 3 m vertically,
compared to about 40-70 m horizontally and 7 m vertically in DeepCore. It will
be deployed in the polar season of 2025/26. This additional hardware features
new types of optical modules with multi-PMT configurations, as well as
calibration devices. This upgrade will more than triple the number of PMT
channels with respect to current IceCube, and will significantly enhance its
capabilities in the GeV energy range. However, the increased channel count also
poses new computational challenges for the event simulation, selection, and
reconstruction. In this contribution we present updated oscillation
sensitivities based on the latest advancements in simulation, event selection,
and reconstruction techniques.
