Pretty much. There is clearly geographic spread which implies undetected spread within the currently infected area. You'd have to be naive to expect anything different to what has happened in Australia.
That makes me naive, so can you put a rough number where NZ will be in 2 weeks and 4 weeks?
If things go very well it'll be a linear increase in case numbers, if things go normally it'll be exponential.
The seven day average has roughly doubled in a week from around 15 to around 30 per day so 2 weeks would be around 120 cases per day, 4 weeks around 500 cases per day.