Summary mails of CSS Grid Layout implementation status and plans in Blink https://groups.google.com/a/chromium.org/g/blink-dev/c/Ru07NWrx8Ms/m/3Vrd8TVB5BMJ and WebKit https://lists.webkit.org/pipermail/webkit-dev/2015-January/027159.html