4.2.2 is build number JDQ39, so at the very least, this Nexus 7 is carrying a new version of the Android software.The Bluetooth SIG listing has the same exact the model number, ME370T, as the original Nexus 7, so this is not a new model. But, there is one interesting difference in the listing: the Android build number for the device is JWR11. Android
Last week, there was a leak of a Nexus 4 running Android 4.3, and the build number on that was JWR45B, so it certainly seems like this Nexus 7 is loaded up with the newest version of Jelly Bean. It makes sense though, since Android 4.3 is expected to bring support for Bluetooth 4.0 LE.