Bit of a late reply, but this is exactly what I was thinking too. The new armor pieces do indeed appear in the loading screens, but I haven't seen any of them actually in-game yet. It's a shame, too, because if there was a pack akin to the Lich Hunter pack for the Sisters, I definitely would have picked it up already. DE, Is it bugged to just not exist? Was it cut from the game? If so, why?
I've been enjoying the update so far, and I really only have one problem I can think of off the top of my head: Tenet Grigori. The new Corpus scythe. Why does the disk gimmick have to be activated on heavy attacks while sliding? Why not just normal heavy attacks? I'd say simply remove the slide requirement and make it activated on heavy attacks only. Right now, in my opinion, the disk activation method is so oddly specific and really takes away any real reasons to actually use it. Why slide, heavy attack, and watch the disk sail past a group of enemies when I can just run up and slash them? The fact that it has to be done while also sliding makes it unnecessarily difficult to aim the disk most of the time. Just make it heavy attack only. The slide requirement, while unique, just ends up hurting its usability.