About a potential simd matrix extension ..

Hi,
with gcc14 adding ARM SVE1/2 std::experimental::simd support, support is complete(minus RISC-V..
 so looking already at a potential std::experimental::simd_matrix proposal with Intel AMX, ARM SME1/2 support and (via hacks) even Apple AMX?
 It’s planned already and some early (software) implementations/prototypes?