Not sure if there will be any immediate implications for Infuse but newest Macs support HDMI 2.1 with 8K60 or 4K240
Apple TV 4K has had HDMI 2.1 since 2020
Unfortunately manufacturers get to pick and choose what they want to include in their hdmi 2.1. Since this is a pro device it would be nice to see more included. Unfortunate apple hasn’t mentioned much other than resolution and refresh rates.
By itself, the HDMI 2.1 port has all the features that a software programmer wants to implement. And first of all, it just concerns the video signal. After all, Apple does not limit the capabilities of HDMI 2.1 itself in any way.
This article has some good info what I am trying to explain. Essentially a manufacturer doesn’t even need to support 40Gbps or 48Gbps bandwidth to be called hdmi 2.1. Hopefully once people get their hands on these they can do some real testing to see. But of course it is up to apple to support any or all of the features. Most likely we will not see everything