I was told by the dealer that the new DVD to update the maps & GPS will be available in Nov '11. He couldn't tell me what new version it will be - but the price will be $250 and a service appointment. I also see Nav / GPS update DVD's listed on eBay. These are listed as "2010 / 2011" and 10.1 U92 is the version and priced at $150 to $199. How do I tell what my current version is? I have a 2010 Gen III. The 3 DVD's listed on eBay are specifically listed as compatible with the '10 / '11 Prius (and not the '09 and older). We are starting to run into maps that are wrong - some can be explained (like the new configuration of our local on-ramp to the freeway - new as of 3 months ago) - but other mistakes are less explainable. I looked at some of the other posts - but they are related to older Prius ('05, '09) and they have different Nav systems.