"Stuff's changed since you left," Nnoitra said, sitting back in his chair. "We've got two new scientists."

Because scientists were, apparently, like grey hairs.

Other than the addition of the Ryoka and Professor Hojo into the palace's ranks, not much was different. Kadaj likely already knew that the Sound 4 were now Kuja's minions, either from Kuja himself or from Tayuya, and he couldn't think of anything else that had happened since he'd scarpered in the wake of the murder they had jointly committed.