I'd also like to support this. The current firmware-amd-graphics is getting close to being a year old. While of course the Stable branch won't get up-to-date firmware as that's not the point of firmware, I don't see a reason at least sid or an experimental branch shouldn't be kept more up-to-date. And I don't really see a reason why that shouldn't be the case for testing and stable-updates or stable-backports too.
E.g., a Ryzen 7040's iGPU can't be handled by the 06/2023 firmware package, it will complain that "amdgpu/gc_11_0_1_me" couldn't be loaded. With at least the 09/2023 firmware that's not an issue anymore.
Greetings,
Richard