Their ripjaws line was already ultra tight with 3600MHz and CL14 and pretty solid.
This is only new as far as the 4000MHz with CL14 is concerned.
Technically this is the same Trident kit they have always had, it just sports a new XMP profile that bumps the voltage to 1.55V so it can handle the higher frequency and timings. If you have the Trident Royal kit already, raise the voltage and see what you can do with it, I bet you wont see a difference.
So, what do you get for the extra $$$, a new XMP profile and warranty to run you memory at this high of a voltage! Same chips, same package, same everything else.