About 4-1/2 years ago, Apple CEO Steve Jobs unveiled the iPod. The video below, recently added to YouTube, captures that event.

Yesterday, Apple reported that it sold 8.5 million iPods in the most recent quarter, generating revenue of $1.71 billion. That in itself — selling $1.7bil in the slowest quarter of the year, less than 5 years after product launch — amazes me. And yet, according to Stephen Coleman of Daedalus Capital, the iPod may have just reached the top half of the s-curve:

“I think [8.5 mil iPods] is light. I think that’s what happens — they’re reaching a certain maturity.”

How does that grab you? The iPod reaching “a certain maturity.” Whether that’s true or not, you can bet that Apple has another innovation or two up its sleeve. They must like their chances — Jobs just told the Cupertino City Council that his company spent a lot of money to buy land in their domain for building a new campus.