For those who are interested, Olympus has released a new firmware update for the E-M1 and E-M5 Mark II. New features include Live View Boost II, and a new Underwater Picture Mode. Description here:
http://www.photoxels.com/tag/olympus-em1/Neither feature looks compelling for my needs, but maybe they will be important to some. Note that updating resets all your current menu settings, so be sure to record them before proceeding with the update.
