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Hundred Sixty Billion planets:
http://www.space.com/14200-160-billion-alien-planets-milky-galaxy.html
http://www.nature.com/nature/journal/v481/n7380/full/nature10684.html
Kepler finds three smallest exoplanets:
http://www.nasa.gov/mission_pages/kepler/news/smallest-exoplanets.html
Planets around binary stars may be very common:
http://www.physorg.com/news/2012-01-wealth-habitable-planets-milky.html
http://arstechnica.com/science/news/2012/01/tatooine-like-planets-may-be-common.ars