The japanese blog Egami (Click here) found a new Olympus patent desciribing the new “Liquid Lens” technology. I saw similar patent from Sony and Samsung in the past that’s why I can tell you the advantages of such lenses:
-non-movement glasses for zoom or AF
-less glasses inside the lens
-faster electrical response
-non-motor on the glass
-silence AF mode
In summary you can make much smaller lenses (perfect for pancakes) with ultra fast and silent AF. I hope Olympus will release such lenses as soon as possible!