CSS Grid Layout just shipped behind a flag (about:flags → “Enable Unprefixed CSS Grid Layout”) in Windows 10 Insider Preview build 16226.Barry Bloye commented
Excellent! Not long until it's ready for a general release, if this is anything to go by :)
Support for using CSS Transforms on SVG elements is now on the Microsoft Edge backlog with a priority of medium.
CSS Box Alignment is now on the Microsoft Edge backlog. You can track the status at https://dev.modern.ie/platform/status/boxalignment/