[Fizzlemizz]

GetMinimapZoneText() will get the current zone text.

If you want to update it while moving, use events:

PLAYER_ENTERING_WORLD
ZONE_CHANGED
ZONE_CHANGED_INDOORS
ZONE_CHANGED_NEW_AREA

Edit: You can also use GetZonePVPInfo() to get the zone type, sanctuary, contested, friendly, hostile, arena.