Haven't seen this discussed yet, but wondering if the 5D MK III will be able to take the LP-E6N. Seems the only difference is the LP-E6N has 200mA more juice, and I am suspecting Canon looks at the battery in firmware, but wondering if in the future with a firmware upgrade, the 5DMK III will be able to take advantage of stronger and likely longer lasting batteries from the 7D MK II