AMD

We can't say until we know when the cards launch. Right now, the low-end has barely been updated since 2021. Navi 33/7600 is a very small update of Navi 23/6600XT. It moved to 6nm but there are no other relevant changes, because AMD did not increase the CU count and has utterly failed to make use of the dual issue shaders in RDNA3. That level is thus far more important to update right now. Say that AMD does that in early to mid 2024 and updates the high end in 2025. There is a new "7600XT" or "8600" with 48 CUs to fill the gap between 7700XT and 7600, meeting 4060 Ti more closely - that's great. When Blackwell launches in early 2025, AMD can be ready to update the high end at the same time. They have done that before - after all, RDNA 2 was the only recent time that the they did the entire line on one generation (RDNA 3 has only done 3 cards, Navi 24 is a holdover).

Not sure I think that that is particularly likely, but please remember the timeline when people talk about RDNA 4. Without release dates, those predictions are worthless.