[jader201]

With the title being a bit misleading (this isn't about 3D), the key takeaways are that two cameras/lens will allow:

1) Two different focal lengths/zoom levels without having to use digital zoom

2) Better low light quality due to twice as much information

3) Better depth analysis: quicker autofocus, blurred backgrounds, augmented reality

[skywhopper]

With the CPU/GPU power available to today's smartphones, I see a lot of promise in software-assisted photo construction using multiple cameras. Sort of like triangulating a 2D or 3D location in space using multiple 1D measurements, different camera/lens pairs with differing strengths can be combined to produce something greater than either one could alone. Nice!