I'm surprised we didn't get any performance numbers. Either raw power or at least power efficiency and projected battery life improvements. Seeing as this is a major reason for the transition (according to them), it feels very weird. They're shipping a 'Development Transition Kit' Mac mini with an A12Z this week, so it's not like the numbers are going to stay private for a long time. Even if there's an NDA, someone's…
It makes sense that they wouldn't:
1. Its dev hardware, not final production hardware. They'll want to compare the A13 or A14 (or whatever SoC they finally use) for benchmarks.
2. Until the apps are optimized, it doesn't make sense for Apple to put itself in the position of bad press with premature figures.