The Wi-Fi enabled HERO3: Black Edition is the most advanced GoPro, ever.It  is 30% smaller, 25% lighter and 2x more powerful than previous models. With built-in Wi-Fi it also captures ultra-wide 1440p 48fps, 1080p 60 fps and 720p 120 fps video and 12MP photos at a rate of 30 photos per second.

Some of the new benefits include compared to older model include:

• Professional quality HD video & 12MP photos
• Built-in Wi-Fi enables remote control via included Wi-Fi Remote or live video preview and remote control on smartphones and tablets running the free GoPro app.
• Compatible with all GoPro mounts for attaching to gear, body, helmets, vehicles and more
• Backwards compatible with older generation BacPacs™
• New advanced camera settings: Looping video, Continuous Photo, Manual White Balance control, Protune Mode, allows to shoot photos while recording video and more.

more info at gopro.com