Sorry, typo, projected schedule should be:
- GLES 3.1 release specification: 2014 (2 years ES 2.0)
- WebGL 2.1 first draft specification: expected 2016 (???) (2 years ES 3.1, 4 years WebGL 2.0, and counting)
- WebGL 2.1 release specification: expected 2018 (???)
- WebGL 2.1 public release: expected 2018 (???)