  SOXS (Son Of X-Shooter) is a single object spectrograph, characterized by
offering a wide simultaneous spectral coverage from U- to H-band, built by an
international consortium for the 3.6-m ESO New Technology Telescope at the La
Silla Observatory, in the Southern part of the Chilean Atacama Desert. The
consortium is focussed on a clear scientific goal: the spectrograph will
observe all kind of transient and variable sources discovered by different
surveys with a highly flexible schedule, updated daily, based on the Target of
Opportunity concept. It will provide a key spectroscopic partner to any kind of
imaging survey, becoming one of the premier transient follow-up instruments in
the Southern hemisphere. SOXS will study a mixture of transients encompassing
all distance scales and branches of astronomy, including fast alerts (such as
gamma-ray bursts and gravitational waves), mid-term alerts (such as supernovae
and X-ray transients), and fixed-time events (such as the close-by passage of a
minor planet or exoplanets). It will also have the scope to observe active
galactic nuclei and blazars, tidal disruption events, fast radio bursts, and
more. Besides of the consortium programs on guaranteed time, the instrument is
offered to the ESO community for any kind of astrophysical target. The project
has passed the Final Design Review and is currently in manufacturing and
integration phase. This paper describes the development status of the project.
