Also: A new LED display, 24-inch built-in iSight, built-in speakers and MagSafe.

Cost: $899; available in November.

As for the existing standard white plastic MacBook model, Apple (AAPL) is dropping the price to $999, according to Steve Jobs.

Back to the refreshed line, MacBook users have been asking for “a metal enclosure, faster graphics, and LED display,” Jobs explains. “We’re giving it to them.”

Similar features as the new Pro: unibody enclosure, glass trackpad, faster graphics Nvidia 9400 graphics chip and a five-time increase in graphics performance. The new display is designed with laptops in mind.

And continuing a theme at this event, the new MacBook is environmentally friendly. It has also been awarded the EPA EPEAT designation.

The new metal 13.3-inch MacBook sells for $1,299. The $1,599 model buys a faster processor.

Units start shipping today, and will be in stores tomorrow.

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 …