YongNuo have announced the YN560 IV which is the latest update in the very popular YN-560 series of manual flash units.
The YN560 IV now adding a master mode, or effectively a YN560-TX radio transmitter unit built into the flash (in addition to the remote manual radio receiver already built into the current YN-560 III).
The YN560 IV master flash can control the remote manual flash power, and flash zoom length, of 3 individual groups of remote YN-560 III and YN560 IV flashes (while the YN560-TX has the extra ability to control up to 6 individual groups).
Like the current YN-560 III, the new YN560 IV flash has the remote manual radio slave built in as well, which can be controlled by other YN560 IV,