This is a page from the Cascading Style Sheets Working Group Blog. Some other places to find information are the “current work” page, the www-style mailing list, the Future of CSS syndicator, and the issue list on Github.
Do you want to know how the CSS WG works? Fantasai has written about:csswg, An Inside View of the CSS Working Group at W3C.
image-fit
to content-fit
. Concern that for CSS, this only appies to images while the name implies it applies to e.g. text content. No better suggestions. Agreed to ask for more suggestions.