As is usual in the IT industry, a single phrase or concept (or an acronym) means different things to different people and HTML5 is no different. Robin presented a section by WHATWG group that produces a clear distinction among the following:
- Features that are considered part of the next generation of HTML beyond HTML5 ...
- Features that are part of HTML (and this specification) but that are currently published as separate specifications ...
- Features that are not currently in this document that were in the past considered part of HTML5, or that were never part of HTML5 but have been referred to as part of HTML5 in the media ...