IIRC, Apple licensed Codeweaver’s source and is extending it privately. My take is that this code, along with Game Mode is basically “Rosetta” for Windows, optimized for games. That would mean that you would launch a windows game on an M-chip Mac and it would launch without having to kick off an emulation mode. Folks playing FFXIV on Mac would have the feel.
I do think that PC devs will need to do something, I don’t think executables will work. Rather Apple is subsidizing the investment that the consumer and the developer needs to invoke to have a more prolific gaming experience.