GMC makes HD Radio standard for first time

HD Radio will be offered as standard equipment in a GMC vehicle for the first time with the launch late this year of the 2013 GMC Acadia.
http://www.twice.com/article/480483-...d_HD_Radio.php

I'll be picking up the bi-fuel (CNG) Silverado. Sister truck, so the audio options should be identical.

EDIT: The bi-fuel truck will be available in a GMC flavor, too.