There hasn’t really been that much news on it since this summer. The best way to follow all the latest Granite news is by going to http://www.gmauthority.com and then hovering over GMC at the top of the page — and then clicking on Granite.
Also, here’s the latest from GMC as a brand:
http://gmauthority.com/blog/2011/10/future-product-guide-gmc-vehicles-for-2012-2013-2014-model-years/
