The new and current official version of Norton 360 is version 21 (2017). It is a change from the
earlier one which went from 1.0 to 6.0. While in 2015, there were only two Norton 360 versions
that were released in the gap of six months that made it catch up with other Norton Security
products i.e. Norton Internet Security and Norton Antivirus. Even though this time, Symantec
has marketed all of its three products as version-less, so there is no official version number
visible on Norton.com website. All the three Norton products are considered as 2017 based on
their earlier version history.