  Despite decades of dedicated efforts there are still basic questions to
answer with regard to Supernova progenitor systems and explosion mechanisms. In
particular, in the last years a number of exceptionally bright objects and
extremely faint events have demonstrated an unexpected large Supernova variety.
The large number of Supernovae candidates at different redshifts provided by
the next generation surveys, from ground and space, will allow to reach a
better insight of the Supernova events in all their flavours. In particular it
will be the possible to assess the systematics of type Ia Supernovae as
distance indicator at any redshift. The Gaia astrometric mission is expected to
discover a huge number of transient events, including Supernovae, which will be
immediately disseminated to the astronomical community by a transients alert
system for a suitable follow up.
