This was my (hopeful) first thought on seeing this; his recent posts have been Quake-related. I do hope this is a harbinger of another installment. His others have been excellent.

Almost certainly - every other of his books has been telegraphed by articles about the work he’s doing to get the original setup built and running.

I hope so. The other books have been great fun to read, with the detour of CP-SYSTEM as a nice surprise.