I just recently pre-ordered the Phantom 4 and I have a question about the remote control. Does anyone know if the HDMI Output Module will work on on the phantom 4 controller? I noticed the P4 controller does not have HDMI but it looks like the same controller as the P3, if anyone knows please get back to me....can't find any info about this anywhere?

I searched also...
Typed "hdmi module" in the search tab and voila!...http://forum.dji.com/thread-44192-1-1.html

Yes, it can be used on the Phantom 4, it might need to be upgraded to the firmware of the Phantom 4 before use.