Not sure what you're referring to exactly.
The HD devices are on the B&N version 2.1 which shouldnt be confused with the Android version which is 4.0 (something.)
If the apps you were looking at were on the GP store, you can try to download them.
I believe he is referring to the fact that BN is stopping development of their own in house tablets. I would hope and imagine that they will continue to work on existing Nook OS to have it run on the latest Jelly Bean platform...although the Nook's OS has it's own "version", it still is developed on the Android platform - and the latest build is not built on the 4.2 JB platform.