CryptHawk?

http://dronomy.eu/blog/crypthawk/

it use the Cortex M7 CPU

That’s nice - but unless they get their board config supported by us all they can offer is legacy software (and new hardware with outdated software is useless). PX4 is moving so quickly that manufacturers not working with upstream only have outdated software and functionality - so lets hope they realise that and get in touch.