I missed that on October 6th that Secretaries Burwell and Vilsack had already issued a statement through the USDA blog (who knew a government agency blogs ) that consideration of sustainability is out, but that:

"This year, we will release the 2015 edition, and though the guidelines have yet to be finalized, we know they will be similar in many key respects to those of past years. Fruits and vegetables, low-fat dairy, whole grains and lean meats and other proteins, and limited amounts of saturated fats, added sugars and sodium remain the building blocks of a healthy lifestyle.

- See more at: http://blogs.usda.gov/2015/10/06/2015-dietary-guidelines-giving-you-the-tools-you-need-to-make-healthy-choices/#sthash.X3DuRegl.dpuf"