A Markdown Community Group [2] has been created on w3.org, and people have started to push some effort in it [3][4][5], but it has been totally ignored since the beginning, despite the communication attempts.
Maybe I don’t have all the informations, but it looks like a waste to me, and I find it disrespectful for the people who worked on the project. All of this could have easily been avoided with a simple communication about the status of the project.
[1] http://blog.codinghorror.com/the-future-of-markdown/
[2] http://www.w3.org/community/markdown/
[3] http://www.w3.org/community/markdown/wiki/Main_Page
[4] http://lists.w3.org/Archives/Public/public-markdown/2014Mar/...
[5] http://lists.w3.org/Archives/Public/public-markdown/2014Jul/...