It's kind of funny. I admit feeling some fomo with this one, and/or the 9900/9950 X3D parts, and only because I've seen reviews showing 5-15 FPS difference 5800X3D vs 7800X3D at 4K and this could be up to another 8 FPS, or more, on top of that. The only thing I need at this point are for the b750 motherboards to come out.
Otherwise it's starting to make more sense to upgrade my 4090 build to AM5 for less $$$ than going through the initial launch madness of trying to get MSI Liquid Suprim 5090 if/when it launches in 2025. I figure around $1K or maybe $100-$200 more for the AM5 motherboard/ram/cpu and around $2K-$2500 for that 5090. Meanwhile the platform upgrade could easily give over 20 FPS with the 4090 I already have, even at 4K.