Will there be new gaming keyboard with additional keys coming?

Personally I don't think so. All gaming hardware producers remove more and more keys and functionality. They all follow the trend for simple games, that don't need complicated user interaction, like MMO's, in the past. And it fits to the greed of optimising company profit. Save some pennies, increase profit. It's not Razer alone. So they are loosing customers to standard cheap producers, except of some fanboys and Fortnite players. Why should someone buy a 150 $ keyboard, a 90 $ mice, when it comes with no additional advantage ? "Oh yes, it has mechanical keys" (can be heared in the whole neighbourhood), clicks 2 ms faster than a standard key, so you are the winner. "Oh yes, has 1000000xx Laser, makes you aim your enemy more perfect, so you are the winner." HaHa. And the rest: "Yes it's so nice having a wondeful green lightning Logo on my devices, it's worth paying 100th of dollars more". They all don't realize, whats going on. Sry, no hope. Razer, at least, still has some fine hardware products, but only messie software drivers. So save yout money, untill they have learned the lesson.