For what it's worth, here are also [1] the Framework community forum thread about Arch and [2] the Arch wiki page about Framework in case you're interested.

I'm still waiting for mine to arrive (in the next batch) but I plan to install Manjaro when it does, and am cautiously optimistic that it'll be mostly painless.

[1] https://community.frame.work/t/arch-linux-on-the-framework-l... [2] https://wiki.archlinux.org/title/Framework_Laptop

Might be worth noting, I forgot about this when making my original comment, I wasn't able to get my USB drive for it to boot without disabling secure boot, but secure boot isn't something I care about so it wasn't a problem for me. I've heard it works but I can't comment on the specifics of it.

They donated several laptops to different distro maintainers, Arch included, fwiw.

Not to say that it guarantees anything, it's just nice I think that Framework cares about Linux compatibility and is acting on it.