[mst]

Also possible on other pro body,s like D800 D4/s etc?

 

From what I have read so far: no. You need the WR-R10 transmitter, which in general is compatible with other cameras, too, but only to remote control the cameras it is connected to. If you want to use the radio features, you're limited to the D5 and D500.

 

It might be possible to add this feature set to older cameras, too. Time will tell if Nikon sees the need to do so.

 

If you want to have a working radio controlled wireless solution that retains CLS/iTTL functionality, better look elsewhere, like Nissin, Yongnuo or, if you have lots of money to spend, Pocketwizard.

 

-- Markus