I had the OEM Nav system installed in my 2006 C4 Cab in January. It came with the 2006 DVD. A couple of weeks later I learned the 2010 DCD had been released (By the way, it actually says 2009). I went back to the dealer, told him I thought he should update the software for free, he negotiated with Porsche NA and did the whole thing for free. Not a major surprise, but nice to know they did it. They did point out that technically, I purchased the Nav two weeks before the release of the new software so they didn't HAVE to do it. So I said, "thanks very much."