I don’t think it will change anything. Docker is already very well integrated with macOS. It’s just another option to run containers, that’s all. Behind the scenes it’s everything the same and based on a Linux VM. Ah and it’s worth mentioning that the current implementation has lots of limitations. This can be found at the GitHub project page.
I like the approach of having individual microvms per container rather than docker’s way of having one big VM.
I don’t think it’ll change the market or anything though. Developing linux software by using macos as your desktop environment is already incredibly common. It’s just nice that it’ll be part of the OS now and I don’t need to go download some third party software to run a few containers.
Since this is a relatively new development (or rumor), widespread hands-on testing might still be limited. Developers and early adopters are probably experimenting with virtualization frameworks or lightweight containers, especially with Ubuntu 24.04 on Apple Silicon or Intel Macs.