http://blogs.wsj.com/personal-technology/2014/09/29/gopros-new-hero-cameras-more-power-cheaper-starting-price/

Hero: The big deal about the new baseline GoPro—yup, just called
the Hero—is its $130 price tag. Aside from that, it’s pretty much the same as
what we’ve seen in GoPros from the year’s past, priced at $200 or more. The Hero
delivers 1080p video at 30 frames per second, or 720p video at 60fps. Still
photos top out at 5 megapixels with a 5 frames-per-second burst mode. GoPro says
the new model will offer 2.5 hours of recording time.

Hero4 Silver: The $400 mid-range model’s bragging right’s over last year’s Hero3
Silver are faster frame rates and new touch-screen controls on the back—a first
for a GoPro camera.