Within the iGov WG, we've been talking about shifting to markdown in GitHub from Bitbucket and XML.
Bitbucket repo: https://bitbucket.org/openid/igov
Editors' draft: https://openid.bitbucket.io/iGov/
OpenID WG page: https://openid.net/wg/igov/
OpenID listserv: https://lists.openid.net/pipermail/openid-specs-igov/