That's great news! Pimax headsets have 160 degrees Horizontal in Large FOV mode, 140 degrees in Normal FOV mode, and 120 degrees in Small FOV mode. So it looks like HTC has achieved what is considered Small mode on Pimax but far surpasses other headsets like the Reverb G2 and Valve Index.
I hope someday HTC reaches 140 Horizontal or higher as that peripheral vision is really nice.