I'd bet big bucks they'll be pushing eGPUs with this model. They've invested so much developer time and hardware R&D into them for Macbooks and for the form fac

I'd bet big bucks they'll be pushing eGPUs with this model. They've invested so much developer time and hardware R&D into them for Macbooks and for the form factor they're shooting for, it'll make sense to have a powerful external TB3 GPU instead of a Radeon 560X or something. It'll let them get away with a small case without extreme cooling/noise.