Well, to be honest I don't even remember the details. I think it was just for the 2004 Prius, or maybe just those people who mentioned that their DVD's seemed a bit inaccurate. At one point I was informed (perhaps on the boards?) that there was a free upgrade being covered. At my previous service they confirmed this but I asked them to wait for the next one. This time they just ordered it without really telling me, so hopefully it's the newest.
Since you have a 2005 you likely have a working one
Mine isn't really that bad, but I won't dispute the upgrade!