The blog post linked to by parent leads to this page https://www.gov.uk/government/publications/open-standards-for-government/sharing-or-collaborating-with-gov

The blog post linked to by parent leads to this page https://www.gov.uk/government/publications/open-standards-for-government/sharing-or-collaborating-with-government-documents https://www.gov.uk/government/publications/open-standards-fo... As OA mentions, this changeover will take some time. I think they are serious about it though.