I have the 28SAG in my sig on order and passed on the upgrade as I wanted customize my system (if I even really use it). While in LA for work this week I stopped by a couple of Attitude and Stellar dealers as my dealer only had a stripped 28SAG so I wanted to browse other models while I had some free time. I saw one model that had the upgrade and it was using a Jensen VM9226BT with digital display. Looks to be more car-friendly with nav and sat ready along with a backup camera option. A quick look at the install diagram shows what seems to be just an RCA video out. If all this is true I would not be too happy to pay for an upgrade that basically go me a sub and some speakers. Of course YMMV.