Bibliofuture dug up some of Microsoft's predictions for e-books from 2000. Most of them are alarmingly right-on:
The prediction for 2010 was: Popular eBook devices weigh eight ounces, run for more than 24 hours, offer beautiful non-backlit displays, are available in flexible/foldable form factors, and hold more books and magazines than most university libraries. They cost less than $100 and are often given away free with the purchase of several books or a magazine subscription.
The Kindle weighs 8.5 ounces and cost $139 for the cheapest model. Microsoft was in the ballpark of being correct.
Further into the future, Microsoft predicts that e-books will be the norm—the thing you think of when you hear the word "book"—by 2020.
(Via The Digital Reader.)