Cool! Was it an 85, or a P85/P85+? What color did you get?
From what I've observed, the P85 and P85+ models were first to get AP1 starting in late September 2014. Not sure if the 85 got AP1 at the same time, but I know that at my delivery on the last weekend of September, probably half of the cars being delivered did NOT have AP1 hardware. It's possible that they continued to build some cars without AP1 until the 'D' announcement in October.