Yes, I have heard from others on this forum that they have seen 2012 Jamis Comps in gray at their LBS, although it is not yet shown on the website. They started selling the Comps in gray midway through the 2012 models (by popular demand).
I have a 2011 Coda Sport, which is the same as a 2012 Comp (almost), with carbon fork in the gray color. They switched the model names when the 2012s appeared. The Comp is a very good choice, and I like the gray, but I understand that others may not feel the same about this shade. I had a blue bike before and it wasn't quite as fast as this gray one.
Color is very important to me--my saddle tilt may be wrong and my stem length might make my hands numb, but I look cool (I think), or at least my bike does.