If by Optix you mean the use of Hardware Ray tracing then I believe the latest is AMD and Blender have not publicly contributed to the conversation in any meaningful way. I would infer this means that adding hardware ray tracing for AMD GPU’s is the lowest priority. Also worth noting that since the release of RDNA2 in 2020 AMD GPU owners have been waiting for hardware ray tracing however AMD and Blender failed to deliver.
In summary no news I’m aware of yet, and if / when there is news be cautious of any claim that is not implemented and independently tested.