Foresee sensors, test points on the PCB?
http://www.digikey.com/en-US/articles/techzone/2011/jun/ultra-low-power-mcus-enable-energy-harvesting-designs
http://www.silabs.com/Support%20Documents/TechnicalDocs/implementing-low-power-graphical-displays.pdf
http://www.digikey.com/en/articles/techzone/2014/jan/selecting-the-right-ultra-low-quiescent-current-ldo-regulator
http://www.ecnmag.com/articles/2012/07/specifying-right-ultra-low-iq-ldo