The GoPro HD Hero 4 will be powered by the Ambarella A9 camera SoC, which, besides being able to film in 4K resolution at 30fps, will be able to record in ultra high framerate modes for HD and fullHD, namely 1080p at 120fps, and 720p at 240fps.

Also included in the A9 specifications is 700Mpixels/s oversampling performance, multi-exposure HDR and WDR tone mapping, and electronic image stabilization EIS. There’s also WiFi capabilities with remote viewfinder and playback functions.

On the more speculative side, there are rumors floating around that the Hero 4 will sport two lenses side-by-side for filming in 3D, but that has not been confirmed

via GoPro Hero 4 specs get leaked, can shoot 4K video at 30fps – GSMArena Blog.

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