GAMI Awarded Long-Awaited STC For Unleaded 100-Octane Avgas - AVweb

I think that is the hope, but if I recall, GAMI got fed up with how PAFI was set up and decided to go their own route with STC approvals. I would think that if G100UL takes foot across a significant portion of the GA fleet, it will eventually be accepted as a 100LL replacement sans STC.