I do hope it wouldn't need a tune to take advantage of the higher octane. I do have a few plans to gain little power here and there. I hope there will be an OFT (Open Flash Tablet) for this car that will be plug and play on downloadable tunes.It wouldn't. The ecu would compensate for the higher octane automatically. The only "benefit" is higher detergent concentration.
In the future, however, high output tunes that advance timing could require higher octane or even E85.