https://www.altoprofessional.com/products/tmd-16
A brief look says it is as you say @Phil Starr. I have only had a cursory look at the Operating Instructions, but it has one drawback that I can see, like the Flow 8 has control via Bluetooth but not Wi-Fi/Ethernet. Not really a big deal for a pub band, but where folks want control for a sound check or musicians want some control of their own monitor mix, you cannot do it. It also has only 8 mic/line inputs, and I am not sure that 3 stereo pairs is really needed on this size of mixer. None of these would be a deal-breaker if you were transitioning from an Analogue mixer. I would not swap it for my A&H CQ20, but if I had never used a digital mixer, It would be an option.
I do commend Alto for doing something different, though.