In my report on the C++ standards meeting this May, I described the status of the Concepts TS as of the end of the meeting:

• The committee’s Core Working Group (CWG) was working on addressing comments received from national standards bodies.
• CWG planned to hold a post-meeting teleconference to complete the final wording including the resolutions of the comments.
• The committee would then have the option of holding a committee-wide teleconference to vote the final wording for publication, or else delay this vote until the next face-to-face meeting in October.

I’m excited to report that the CWG telecon has taken place, final wording has been produced, and the committee-wide telecon to approve the final wording has been scheduled for July 20.

If this vote goes through, the final wording of the Concepts TS will be sent to ISO for publication, and the TS will be officially published within a few months!

https://botondballo.wordpress.com/2015/07/01/c-concepts-ts-could-be-voted-for-publication-on-july-20/