I'm an arduino guy looking for more power and I'd like to start using the high performance ARM chips such as the A57 and soon the A75, but I'm having an impossible time finding dev boards for anything other than some older ARM chips (I think the highest…

The technical spec for ARM Cortex A-75 claims that it supports a full implementation of ARMv8.2-A. The documents I have been able to reference only point to ARMv8A. Specifically I'm looking for what ARMv8.2-A brings to the SIMD table other than fp16 arithmetic…