At the end of February, 2013, the Deseret News featured an amazing article: “LDS Church Announces New Scripture Edition.” Utah was buzzing with people trying to determine what had been changed and why. The article noted that the changes included “revisions to study aids, new photos, updated maps,” “making historical and contextual adjustments to the section headings of 76 sections of the Doctrine and Covenants,” and “adding introductory headings to both official declarations at the end of the Doctrine and Covenants.”
According to the same article the LDS Church began working on this project in 2004. Currently the new edition is only available on the LDS web site, and the print version will be available in August 2013.
The following article from the Salt Lake City Messenger, May 2013 Issue 120 published by the Utah Lighthouse Ministry gives a nice in-depth summary of the changes:
Archived Backup: available here