From GoPro’s official press release:
“HERO4 is available in two editions, HERO4 Black at MSRP $499 and HERO4 Silver at MSRP $399. GoPro’s Emmy® Award-winning imaging technology combines with enhanced ease-of-use and powerful new features such as 4K30, 2.7K50 and 1080p120 video capture (Black) and built-in touch display convenience (Silver), to make it easier than ever for consumers to self capture and share stunning, professional quality content of their favorite experiences.
HERO4 Black delivers 2x the performance of its best-selling predecessor and now captures cinema-quality 4K video at 30 frames per second (fps), 2.7K video at 50fps and 1080p video at a blistering 120fps, virtually eliminating rolling shutter in most scenarios while allowing for time-bending slow motion effects. HERO4 Black also features an entirely redesigned audio system that captures high fidelity sound with 2x the dynamic range of previous models. Additional enhancements include improved image quality, low light performance, highlight moment tagging and an improved user interface that allows for easier discoverability and access to key features and controls. The HERO4 Black is simply the highest performance GoPro yet.”
More info at gopro.com