I am in a very similar situation that @weffel.
I also would like to have the protocol specification. I’ve studied a lot of LoRaWAN by now and the ability to deal with bigger payloads, dealing with fragmentation and confirmation would be a big plus on my current development.
But, even after reading the available material from Symphony Link I still can’t surelly answer some very basic question to my internal team here (like: is there any fee to be payed? Is LinkLabs also a network provider, like Sigfox?).
So, having the protocol specification can perform a important role on selecting our system architecture.
Thanks in advance.