iPod firmware?

Do you think other 5thGen iPods, will be able to download the new features? Because all they basically are is firmware. The scrolling letter thing, search, and gapless see to me as update worthy. I hope so, because all they did was up the brightness,battery life, and add more features. This in my thoughts might just be so they can have something that can actually play a whole movie. They needed to put something out. I still think there is a chance of a redesign by years end.