Polarizing filters are almost mandatory for landscape photography, but they have a few drawbacks. The first is obvious: the hassle of having to carry filters with your to fit each lens. The second is not quite as obvious but has a vital impact: loss of light within your scene.
Olympus is aiming to change that with a new patented sensor technology that essentially has a built-in polarizing filter within the sensor itself. This technology would automatically analyze a scene for light values and adjust accordingly, allowing you to basically have a polarizer for each one of your lenses without the hassle (or expense) of carrying them around or losing valuable light from critical scenes.