Was the Akutan Zero an advanced prototype?

Was the captured Akutan Zero an advanced prototype whose study led to improvements in the F6F Hellcat?

It was an improved Zero variant rather than an advanced prototype, but its recovery still revealed the newer variant's characteristics at close range.

The captured aircraft was an improved Zero entering service. American investigators had not previously examined that newer variant so closely, so recovering it had substantial intelligence value. Whether examining it led to Hellcat improvements is left unresolved.