NetBlocks has launched crowdfunding campaign XRange wireless module which can achieve over 12km communication. Visit the us at https://www.indiegogo.com/projects/xrange-extreme-long-range-wireless-module-for-868-or-915-mhz/x/7938980
More details about the project at http://www.eevblog.com/forum/crowd-funded-projects/xrange-with-sx1272/