Earlier this year, I authored an article proposing updating Lightning to support USB4 G3x2.
Having seen the surge in Thunderbolt 4 and its backwards-compatibility to Thunderbolt 3 (useful for full bandwith, non-breakout (via hubs) buses), my proposal for Lighting 2 to be based on USB4 should be superseded by this Thunderbolt 4 proposal which changes very little of the previous article apart from enforcing strict support of some core features of USB4.
Thunderbolt 4 is a stricter, high-end version of USB4.
USB4 is based on Thunderbolt 3 with USB 3.2 G1/2.
I would like to see Apple rebuild Lightning with Thunderbolt 4.
Thunderbolt 4 over Lightning would be the stepping stone for M2 in iPhone Pro.
Apple A-class SoCs/SIPs for iPhone and SE.
Apple M-class SoCs/SIPs for iPhone Pro.
This would bring iPhone Pro inline with iPad Pro architecture.
iPad: Apple A SoC
iPad mini: Apple A SoC
iPad Pro: Apple M SoC
iPhone: Apple A SoC
iPhone mini: Apple A SoC
iPhone SE: Apple A SoC
iPhone Pro: Apple M SoC
Building blocks for the desktopification of mobile products.
Thunderbolt 4 over Lightning could allow for macOS to be launched from an iPhone Pro* or iPad Pro via a Thunderbolt 4 dock.
* The dock would need to provide cooling to the iPhone Pro.