I feel like they're more likely to do Berserkers during some sort of Khorne push; likewise with Noise Marines and Slaanesh? Those are the two Legions with Daemon Primarchs most appropriate for release next, after all -- they've been sorta-kinda teasing Angron for a bit and Fulgrim is the dude Guilliman has beef with. It'd make more sense to me, at least, if GW waited on Berserkers and Noise Marines until they're ready to give the World Eaters and Emperor's Children the Thousand Sons/Death Guard treatment.The other Legions will get articles, too! https://www.warhammer-community.com/2019/03/18/heretic-astartes-focus-index/
Next will be the Iron Warriors, followed by Word Bearers, World Eaters, Emperor's Children, Alpha Legion and finally Renegades. Soo... maybe new Berzerkers and Noise Marines and stuff coming up, perhaps?
Especially since a multipart noise marine kit manufactured today would almost certainly come with one or two sonic blasters that look like electric guitars or other musical instruments, rather than everything looking like spaceguns the way the resin upgrade kits do.y'know? Multipart noise marines would be all kinds of awesome.