There's that too.

I just figured that slaadi in general were given chaotic evil or even neutral evil traits. These are beings of chaos; it doesn't make sense for a hydroloth to have fun swimming in the Styx while a blue slaad is a hulking bully.

The new fluff on slaadi "society" will try to steer it more into a chaotic neutral mindset. I'm also going to make clear that death slaadi are aberrant and fall outside the set order, as do white and black slaadi.

Again, though, the centerpiece will really be the True Slaadi. We're talking a meltdown of chaos here. It's going to be... hopefully fantastic.