GM Service Manual DVD

I have an old copy of GM's Service Information DVD's that covers up to 2005 MY vehicles (which unfortunately doesn't cover my '05 Grand Prix GXP which was a late-year addition). Did they ever produce any later editions? I've heard that they started doing everything online but that they were supposed to make DVD's in case a service dept's internet connection was down, but I haven't seen anything.

Anyone know how/where to get service info for newer GM vehicles?