Realistically, it doesn't matter, since even if it did run 4.0, all of the shiny new interface of 4.0 will be nowhere to be seen. Android is the base, but near

Realistically, it doesn't matter, since even if it did run 4.0, all of the shiny new interface of 4.0 will be nowhere to be seen. Android is the base, but nearly the whole GUI is custom. And I believe the Nook Tablet is based on 2.3. The Kindle Fire is based on 2.2.