CoP, as it is, is a representation of what life was like and how we progressed during the 20th Century and was updated to go from one end of the century to the other. It is foolish in today's technological world for anyone, including Disney, to try and guess the future or should try.
Not altering it is the exact reason it still exists. We don't need to update to the present because we live in it and what the next 75 years will bring is absolutely impossible to speculate about. It doesn't need to because it complete spells out the entire 20th century and that is why it still exits. We watch it and the last section becomes as ancient as the first segment was to us. If we want to know how things turned out in the last 25 years just walk outside the theater. It is in Futureland because it graphically shows just how far we advanced during the last century, we live in the current century, and the Land is supposed to show the future. That gives us the past, present and imagined times to come all in one land.