CES concept lenses: Panasonic 12-35 and 35-100 f2.8 OIS with X (PowerZoom)

The semi-mythical Panasonic 12-35 and 35-100mm M43rds lenses have made a guest appearance at CES 2012 as "concept lenses" writes Photography Blog which includes CES 2012 pictures of the two lenses. The lenses have f2.8, PowerOIS and 58mm filter size written on them along with the red X, aka Powerzoom (the second set of pictures in the Photography Blog gallery). This is the same red X you see on the already released 14-42mm X lens.