> I'm going to assume that a dedicated GPU was being used for Tomb Raider—they would have said something otherwise.

They said exactly what SoC they were using, and it's not known to have spare PCIe lanes lying unused in existing products. Apple pretty much just demoed an x86 game running on an overclocked iPad Pro.

Interesting—are you expecting the Thunderbolt ports in the Developer Transition Kit not to work then? Since it's using a Mac Mini chassis.

Tech specs on the DTK webpage don’t mention Thunderbolt at all, just USB-C (2 ports) and USB-A (2 ports), plus a HDMI 2.0 port.

Makes me wonder how the Pro Display used in the demos was being driven. DisplayPort with USB-C alternate mode?

They only said the demos were running off Apple silicon, not that they were running off a Mac Mini DTK machine. They probably have other systems more akin to Mac Pros that they use internally.

They said the demos were running on an A12Z.

It's entirely possible the display was only running at 4K instead of the full, native resolution.

It's not like Apple can't change what connectors are available on the back of the mac Mini. The form factor may not have changed, but the ports available have in the past releases.

Don't be surprised if there is no Thunderbolt 3 at all, but just USB-C.

It may be that by the time these things are ready for an actual release they can be USB4, which is USB-C + Thunderbolt technology, but no longer Intel exclusive.