Corsair does have the right over
selling Cherry MX RGB keyboards on the year of 2014, but that does
not have anything to do with companies being unable to
develop keyboards with MX RGB, as soon as they are sold only in the year of 2015.
But this Ducky Shine IV surely doesn't looks like Cherry MX RGB, since the keys aren't backlit evenly (check the zero on the numpad) and there's no light bleeding everywhere.
Anyways, besides that, it does look like the word "4" really is similar do "death"...