Disney World is always evolving and changing. What's new?

Not your grandma's WDW, or is it? What has changed over the years and what remains the same? While some Disney lovers try to find themselves in the parks as frequently as humanly (and financially) possible, others may have the feeling that a visit to Walt Disney World is something they did, they've experienced, and that not much has changed. Boy! Not so fast! Here we discuss some of the many major and a few of the subtle changes, evolutions, and developments that Walt Disney World has experienced over the years and decades. What did we miss?