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I predict they'll go for 4x A75 CPU cores. That should deliver a noticeable speedup over the A72, while being cheaper to license & fab than A76 (due to being smaller). It'll help single-thread performance as well, unlike adding more cores.

I think the GPU will get larger, and maybe gain some tensor or packed-arithmetic instructions, but I think they'll probably stick with the VideoCore architecture, since they've put so much work into the software stack for it. It'd be cheaper and easier to add AI features to the GPU than to add a whole new AI block, but that's certainly possible.

I don't see RAM going beyond LPDDR4/X. I expect LPDDR5 is still going to be too expensive.