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.
::selection
(Issue #2474) so that will be reviewed further to see if it helps in reaching a resolution..element
property that brings pseudos back to their element (Issue #2816)::
prefix for consistency (Issue #2815)::first-letter
and ::first-line
(Issue #2815):placeholder-select
pseudo class and add a note for ::placeholder
that we’re interested in working on it (Issue #2517)