I continue to think that about 95% of all computer users would be happy if their current OS locked the feature set exactly where it is now and henceforth do nothing except patch bugs.
Maybe do a "new version" if they really must, but only if it doesn't eliminate or forcefully change the current workflow, doesn't require any additional resources, and can demonstrably *IMPROVE* the user's experience with the OS. Which for most people, means that the time that they spend actually using the OS is decreased. After all, for 95% of users, the OS is simply the digital equivalent of their desk. Most people don't want to spend their time staring at their desk, no matter how "pretty" it is, but rather they would prefer to be doing stuff with whatever they put on it.
Side question: How many people would upgrade their desk if the new version of their desk had drawers that took twice as long to open but made a fancy "Wooosh" noise when they did it? Or where you had to push a couple buttons on the side of the desk before you could pick up a pen (or touch the keyboard)?