It looks like the Colorsoft review embargo has been lifted, so here are a bunch of links:
https://www.engadget.com/mobile/tabl...131529685.html
https://techcrunch.com/2024/10/30/ki...oach-to-color/
https://www.cnet.com/tech/computing/...ice-is-tricky/
https://www.zdnet.com/article/the-be...-boox-or-kobo/
https://www.wired.com/review/kindle-colorsoft/
Taken from this post at Reddit:
https://www.reddit.com/r/kindle/comm...views_are_out/
The engadget, cnet, and zdnet links have some direct comparison photos between various color e-readers. I don't see anything conclusive at this point though. In some photos the Colorsoft looks better, in others the Kobo/Boox looks better. In some cases they didn't compare the same screen content, not sure why you would make that choice in a comparison / review articl.