Further to this article on the W3C building bitcoin into Web Payments recently posted on Bravenewcoin.com, the Chairman of the Web Payments Community Group, Manu Sporny, issued a request for assistance in getting some form of bitcoin representation in this area.
I post this here because I have so far only seen this mentioned on r/bitcoin.
If you have the ability to assist and understand bitcoin, please do get in contact with the Web Payments Interest Group and help drive this forward.