From the Review:
It seems like they are dong 1080p passive, and they specifically mention that previously LG passive was NOT 1080p per eye in the older model.
We felt that passive lenses were an improvement on active shutter glasses because they did not flicker, but passive technology (until now) had it's own set of drawbacks. Before circular polarization of light was employed, passive 3D televisions used the same 135º and 45º angles and polarized lenses to make 3D images. However, to achieve these angles, the screen was divided into a a crisscross pattern. It was hard to see with the eye, but every other line of pixels was removed to show a directional picture that could be filtered by polarized glasses. Removing every other line of pixels means a halving of the resolution. No longer can you see 1080p 3D images, the best you can hope for is something slightly better than standard definition. If you turned your head one way or the other, the polarization did not work because the angles were incorrect, and the 3D illusion would be ruined. Any amount of angle to your head would cause severe crosstalk because the angles for the wrong eye would creep into the glasses. Unless you wanted to watch your 3D TV with a protractor taped to your head, the image quality would not be worthy of the investment.
LG's new circularly polarized images and Film Patterned Retarder (FPR) lenses combine to remove all of these disadvantages. There is no resolution loss, because pixels do not need to be cutout to make the angles for polarization, meaning you can watch 1080p 3D images. There is no flickering, and therefore no refresh rate loss. Due to the circular nature of the light waves, you can still see 3D images with your head off-angle (as a side note, the vertical angle is not very good. We recommend keeping your eye-level at the vertical center of the display). The crosstalk numbers are far and away the best we have ever seen, proving to be an extremely noticeable improvement when watching actual 3D content. The glasses are light and inexpensive, as well as fashionable. LG is working with designers to make combined UV/Polarized sunglasses that work with their 3D displays.