Web Components is an active W3 spec. http://www.w3.org/TR/2013/WD-components-intro-20130606/ http://www.w3.org/TR/2013/WD-components-intro-20130606/ All brows

Web Components is an active W3 spec. http://www.w3.org/TR/2013/WD-components-intro-20130606/ http://www.w3.org/TR/2013/WD-components-intro-20130606/ All browsers are going to support Web Components eventually and it is going to greatly expand what we thought HTML should or shouldn't do. I think Chrome Chrome Canary has an implementation behind a flag and FF is actively working on it as well.