Apple has a history of silently changing chips/process in small quantities without telling anyone. AFAIR, they changed the soc inside one of the ipad generations a few years ago when going from 32-28nm. There was a while that the current ipad at the time came with one of two different socs, and there was no way to tell, except the newer soc had a longer battery life and the ipad ran cooler.
It would therefore not surprise me if some existing apple products out there are already shipping with a new soc.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.