It's worth remembering Mr Williamson was the man who decided both Wanganui and Whanganui would be official - though he expected Crown agencies over time to move towards using the "h".
Will we see the same thing arise with our main islands?
Many say they can't see a reason for the change - so said a lot of people on our Facebook page - but the names aren't being changed. The alternatives (and the current names) are simply being made official.
Let's not forget New Zealand has three official languages - English, te reo and New Zealand Sign Language. It doesn't seem too far a stretch to have two official names for an island.
Weather reports aside, how often do you refer to the North or South Island anyway?
The main downside I can see is any confusion arising out of dual naming. Surely most people are intelligent enough to deal with it.
This is an issue ruined by its appeal to bigots, stifling healthy debate.
But when it comes down to it no one should expend too much time, energy or fury getting heated up about it. As one reader posted on our Facebook page - there's more important [stuff] to worry about anyway.