What you are seeing is the firmware for MR816s are W10 compatable (which is actually unknowable), NOT the firewire drivers. People are getting significant audio dropouts and sample rate issues which are both deal killers for users of 816s under W10. Based on how they handled the original zero-latency misrepresentations - telling people the fixes were coming until the statute of limitations ran on false advertising claims, then announcing no fix was coming - I would not be surprised if they wait until one year after they sell their last one to announce no more driver updates. I still can’t get a straight answer from anyone at Steinberg.