The Amazon reviews are worth a read:
An example of the IQ that can be achieved with the camera:
1) What are the available bracketing modes: (ie: how many frames and how programmable is aperture bracketing?).
The the relatively inflexibility of the PEN's bracketing compared to the Panasonics is the reason I still own a G1 for situations where the PEN's bracketing abilities are insufficient.
2) Is full tethering now available?