There are barely any Cherry MX RGB keyboards even on the market, except Corsair's original and Strafe offerings.
The first non corsair Cherry RGB was the Ducky Year of the Goat, and that sold out literally as soon as the shipments arrived. It was the first Ducky limited edition keyboard to instantly sell out of almost all 2015 units made, unlike the Shine 2 78, Shine 4 year of the horse, year of the snake, and the Shine 69 fire edition (the fire 69 was available for many months after release).
And the Ducky Shine 5's are out and they're selling out as fast as people get inventory. It will be awhile before a TKL version comes out from anyone, with the type of demand for these disco light shows...
Ducky can't even make enough RGB Shine 5's to satisfy demand, so I doubt they have any resources to make any TKL right now).
One other company besides Ducky has a Cherry MX RGB board out and I don't remember who it is.