I presume the next hairstyle we receive will be Zero's because (apparently - I can't confirm this myself) it's been found in the data for players via illegal tools. There was no outfit accompanying it so my guess is it might be available from Aloalo Island (the next variant dungeon) similar to Hephaistos' do. The one I want of the recent NPC styles is Durante's because we're long overdue for a new side fade.

On the topic of Mogstation NPC glamours that resemble in-game items I'm already quaking at the shitstorm Alphinaud's Shadowbringers attire is going to stir up when that inevitably gets released within a few months. That has also been dredged up via illegal tools and is another NPC outfit with no dye options and no hairstyle. People don't realize they released a ton of these back in the day because so many are relatively new players who took up the game in mid Shadowbringers.