As per Susan Cadrecha, Google representative, the cities that will be initially getting the amazing new imagery are San Francisco and New York City. The new 3D models can be viewed by using Google Earth or by enabling Earth View mode in Google Maps. The recently completed Freedom Tower and Statue of Liberty are quite impressive examples to begin with.
The update to involve 3D imagery in Google Earth was introduced back in May, 2013. The imagery is far more detailed as compared to the conventional images. Google has promised to update more cities all around the world in 2015. Any guess which cities these might be?