Nothing much, it's an improvement of F3R standard, with improved radar, avionics, irst, spectra, connectivity, uprated engine and adding more weapon and external sensor integration.What are some key features of the F4 variant?
Well no offense really, just a bit fed-up with that question popping out over and over again is all, please use search next time, and the only source that keep mentioning F3R version is LaTribune, while Dassault press release and other publication always mention 'the latest generation Rafale', whatever that even means.I'm just confused, I just asked on another forum and someone Frenchman sent this link.