There’s a lot of emphasis at this unveiling on environmental concerns, reducing the footprint for manufacturing the new notebooks.

Says Ives: “We’ve refined every detail in service of the user.”

Steve Jobs announces that it’s time for Q&A, but with a caveat. No questions about the economy, he says, or Apple’s financial performance because there will be an earnings report next week. And no questions about “my health,” he adds, as a new slide appears on the big screen above him showing his blood pressure.

As the audience laughs, Jobs welcomes Apple COO Tim Cook and Phil Schiller, senior vice president of worldwide marketing, to the stage to take questions from the audience.

Apple (AAPL) does not have an exclusive on the new Nvidia chip, but it will be first to market. “And we’re buying a lot of chips.”

Why no Blu-ray? “Blu-ray is just a bag of hurts,” says Jobs. Apple is waiting things out before “passing that cost burden on to consumers.”

Jobs expects the redesigns to trigger a refresh cycle in both the MacBook and MacBook Pro.

Someone asks why there are no matte screens. Answer: “The vast majority of our customers prefer a glossy finish.”

The 17-inch MacBook Pro is still available, but it has not been refreshed like the other models.

Final question: “Do touchscreens make sense on laptops?” Jobs’s reply: “We’ve experimented with them, but they don’t make a lot of sense to us.”

So no tablet.

And with that, the event is over.

Ives describes how excess aluminum left over from the original piece used in manufacturing is recycled throughout the process. The precision aluminum unibody enclosure that Apple used in the MacBook Air, he notes, is now being extended to the rest of the Mac notebook lineup.

Jobs returns to the stage. He explains that chipmaker Nvidia approached Apple (AAPL) about a new graphics chip that could be used in desktops. Apple decided to adopt it for laptops, however. The chip, called GForce 9400M, delivers graphics up to five times faster than Apple’s current graphics chips.

New notebooks will boast a multi-touch glass trackpad. The entire trackpad is the button.

The trackpad supports multifinger gestures, including some new ones. Four-finger gestures can control AMD app-switching.

A full-glass instant-on LED displays all connectors on one side. The notebooks feature next-gen graphics, mini-display port connector and a magnetic latch.

And they’re environmentally responsible. The unibody design, for example, requires only half the number of parts of Apple’s previous notebooks.

Jobs passes a chassis around the audience, and it is, indeed, very slick. “A tour de force of engineering,” says Jobs. Holding one of these in your hands, it’s tough to disagree.

More coming …

Yet, Apple doesn’t need him–according to Ezra Gottheil of Technology Business Research, who says the iCEO could be replaced by COO Tim Cook and Jonathan Ive, Apple’s senior vice president for industrial design.

“Apple doesn’t need Jobs anymore,” Gottheil said. “He’s established three sound businesses–Mac, iPod and the iPhone–and the company knows how to execute his fanatical devotion to design and usability. There’s a stable management team in place, and they know what they’re doing. Without Jobs, Apple would have to pay a lot more to get the world’s attention. But he’s got a company and a brand and an organization and a strategy in place. There’s no reason to think that those things can’t be carried forward without him.”

Perhaps not–Jobs wouldn’t permit things to unfold otherwise. But there’s no reason to think that they’ll ever be quite the same either.