A few weeks ago, Steve Troughton-Smith and Guilherme Rambo found a software update that contained the code for Apple’s upcoming iMac Pro. Confirming some earlier rumors, it appears that the iMac will have both an Intel processor, as previously announced, and an A10 — the Apple-designed processor powering the iPhone 7. Inevitably, someone will soon bring up the famous quote from Steve Jobs about how traditional desktop computing is a truck, and iOS devices are the cars that everyone will use from now on. In this case, it seems even more appropriate than most.

And nobody noticed.

In OS X Lion, Apple introduced Gatekeeper, which prevented unsigned code from running on a Mac without explicit user approval. During the period between announcement and release, the typical barrage of thought-pieces and angry Tweets were published — most tended towards a cautious optimism that Apple had left users and developers enough headroom. Users could bypass all of the protections with a single click, while Developers could still choose to distribute software, signed or not, through whatever channel they chose.