Condensation, in the form of mist or tiny water droplets, may appear on new windows. Why this occurs and what to do about it is covered in the sample links below. These are Canadian sources. You could easily find more with a Google search.
Relative Humidity Levels and Window Condensation, a Canadian reading list
Window&Surface Condensation What You Should Know
What is the proper level of humidity for a house in the winter?
CMHC: Problems in All Living Areas
Doug Brandy, September, 2012