I read somewhere that the latest G2 (with USB controller) has some planes that did not come with older versions of G2. My understanding is that some of the downloadable airplanes from the G2 website don't work unless you have the newer version with the added planes as a base. A quick look at their website didn't reveal any information about this .

What, if anything, is missing, and is it available anywhere (for no cost) for registered users?