Apple joined the working group of the W3C WebVR
Apple was among the participants of the working group of the W3C, which develops the draft WebVR. His goal is adding support for virtual reality in the major browsers, including Mozilla, Edge, Chrome, and Safari.
The API is already available in Nightly builds of Firefox, Chrome, 56+ for Android, and experimental builds of Chromium for Windows and with Internet Browser for Samsung Gear VR.
Source: Patently Apple