Does 360 shooting mean 360 sight?
The army special rules only mention being able to shoot from any edge.
That would be a big deal if it also counted toward sight.
No, it's just for purpose of shooting and evading. It's in errata.
Some unit’s can see all round – they have 360 degree
vision – and you will find this indicated in the unit’s
description (for example, Wolf Riders in the Orc
army). This simply means a line of sight can be
drawn from any free edge of any stand in the unit
to any stand of another unit. This can potentially
enable such a unit to use its initiative to evade from
an enemy positioned to its side or rear. However,
note that even a unit that can see all round cannot
use its initiative to charge an enemy unless a line of
sight can be drawn from a stand’s front edge.