[cleverjake]

depends on what part you mean - edge is announcing work on HTML templates, which safari already supports (http://caniuse.com/#search=templates)

[ryanisinallofus]

Am I remembering incorrectly in saying that other than templates they have not specified intentions for shadow dom or any of the other specs?

http://caniuse.com/#search=Web%20components

Looks like they are still better off than I-Edge but these intentions at least sound promising.