http://dl01.olympus-imaging.com/ww/ud2/ENU/0001/1090/index31a.html
The "Underwater" function was added to Picture Mode.
*We recommend setting Custom Menu G/icon + WB to OFF.
新增水下模式
The "Live View Boost 2" function was added.
新增 即时预览模式II (本来EM5-II才有的星空预览功能?)
http://www.yuanyu.tw/product/dslr/em5mk2/feature7.html