The 7600xt is coming. The question remains, will it have 8GB of vram or 12GB-16GB of vram. For whatever reason they do not see the value or logic in making 16GB the baseline standard. Then release a 7700XT and 7800XT with 16GB and maybe 20GB of vram. The 7900xtx should have 32GB of vram. Memory prices are in the toilet. So the upgraded memory size would be inconsequential.
AMD could have easily differentiated their GPU offerings with more vram. Nvidia would never up their vram in this current generation of cards.