The Canon version YN622C II will again provide an 560-RX communication mode (as we have already seen in the recent V1.2 YN-622C available since January 2015). This mode allows the remote manual YN560-TX to act as a transmitter unit to the YN622C II as receivers, while providing remote manual power, and remote zoom control.
In comparison the Nikon version YN622N II will now provide a more limited additional 603-RX communication mode. This mode allows RF-603 compatible transmitter units like the RF-603, RF-603 II, RF605, and YN560-TX, to simply fire the YN622N II receivers. Unlike the Canon version, no remote power or zoom control are possible in 603-RX mode (the possibility of group functionality is not yet clear).
Other functions appear to be the same as the original YN-622C and YN-622N. Though updates to the case design may hopefully eliminate issues like the ease of accidentally bumping the transmitter off channel.
The addition of a USB port for firmware updates also now opens the possibility for new features and functions to be periodically added in the future.
Though this added flexibility may also cast further doubt on the ability of some other third party flash manufacturers to retain compatibility with the popular YongNuo system.
PRICE AND AVAILABILITY
Price and availability are not yet stated, though updates to existing YongNuo models are usually available within a few weeks of the announcement.
YongNuo Website – YN622C II
YongNuo Website – YN622N II