I'm at about 4000 miles with 60% oil life remaining, so I'm on target for a 10K mile oil change.
I typically run Mobil 1 (full synthetic) in all my cars. All things being equal, I think it's safe to assume a full synthetic can go longer between changes than a synthetic blend. The onboard oil life "calculator" is surely pre-programmed to indicate the remaining oil life of a synthetic blend, or possibly even conventional oil to just to be on the safe side. All of these gauges (range till empty) seem to err on the side of caution.
That said, I'll be waiting until 0% before even thinking about an oil change.