AFAIK, the main "official" people commenting on that website forum are Thomas Hirsch (hardware designer), P Kittel (not sure of role, co-ordinator?), and Gunnar (3d "GPU" design). Surely it is the most "official" website that exists in the absence of any other information source for the natami and given who is posting there. It is supposed to be a development project at the moment.
They also have a Jens (not individual computers) working (from memory) on the kickstart patches or something or other.
But yes, they have not been very timely at giving "official" progress which will obviously lead to many people asking questions. This is inevitable given the amiga climate of the last few years, dates being set and an answer given after the date has passed as to why it is not met.