> who would have thought that 4k was available in MorphOS.

Everyone who reads MorphOS release news items or release notes ;-)

"MorphOS 3.8 also adds the ability to use state-of-the-art 4K displays in their native resolution."
https://morph.zone/modules/news/article_storyid_2215.html

"Allow up to 3840 pixel wide screens on R400 GPUs and above to support 4K display resolutions"
https://www.morphos-team.net/releasenotes/3.8