Like they did in the US and some other countries, Google Maps is moving away from relying on third party data providers for their map data. Google wants control over the data to make changes as they see fit.
Google announced they have now done so in 10 countries. Those new countries include Australia, Austria, Belgium, Denmark, Liechtenstein, Netherlands, New Zealand, Norway, South Africa and Switzerland.
Brian B. a Google Maps representative announced it also in the Google Maps Forum. He said, "Along with new map data, users can report any errors in these locations using the Report a Problem link in the lower right-hand corner of the map. This will help us make sure we have the most up to date maps available!"
It is all about Google being able to update errors faster and I guess not paying third parties for this data.
Forum discussion at Google Maps Forum.