No OS version, regardless of what platform or type of system intended for, has a very long life expectancy without "patches" or "fixes". To a certain point, this is good. But at some point the entire OS needs to be redone, or totally done over from scratch.
With the current trend toward portable devices and WiFi links, the keyboard is now mostly absent from tablets and E books.. only 'virtual' if needed, on the screen. So the OS needs to have haptic interface features as default. Integrating them into older OS versions may not be the best method.. so a total revision of the OS with a "new" version is required. Unfortunately, many older systems do not have the memory capacity or CPU power to meet the basic requirements of the newer OS versions. Yes, the 'necessities' of life can be expensive! This can be called the "electronic age" or the "digital age" of our existence. Even the Jetsons might be confused, trying to find the right "cloud"!!
F@H.. to solve mankind's maladies.. in our lifetimes!