Two new features added: matchMedia and CSS font-feature-settings
The following two features were just added to When can I use:
Some other minor updates: "Farther future" versions have now been removed for browsers where only (at best) information for the upcoming version is available. Additionally, the Ctrl-F shortcut "hijack" that previously focused the site's search field rather than the browser's in-page search has now been removed. While it was liked by some and intended to be helpful, it was ultimately counter-intuitive and occasionally frustrating to people.