Unified pointer input API subsuming MouseEvent and TouchEvents which addresses several existing problems (especially on touchscreen laptops) and provides future extensibility. Intent-to-implement thread: https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/ODWmcKNQl0I This was behind a flag starting in Chrome 52.
Docs: https://developers.google.com/web/updates/2016/10/pointer-events https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent