Partly, pretty sure they were going to do more. Also, PC. I can't find the article, but they promised further upgrades to memory or something about multithreading tech. that would make the situation in Cyro even better (it's still bad). @ZOS_Kevin please correct me If I'm wrong on thisNo idea which platform you're talking about, but haven't they all been upgraded now?
The last of the hardware work was done on the XBox server a month or so back now - that was the last one remaining undone.
The multithreading stuff has a thread around here somewhere, let me see if I can find it.... Ah, here you go:
https://forums.elderscrollsonline.com/en/discussion/637691/server-multithreading-update-july-2023/p1