Do you care about interface changes in major software updates?

Do you care about interface changes in major software updates?: Some would say the actual appearance of a mobile operating system's interface plays a major role in their opinion of it. For most of us who care to take the time to read and/or write about phones, that's probably true. If a phone's interface is not exactly appealing, the first thing I will do is make not of it publicly. And I probably won't use said software outside of a review window. Give me some gorgeous software, though, and I may adopt it as one of the many platforms I use...