Hands on with fourth-generation iPod touch

Source from Apple.com and Macworld.com

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Apple announced the new iPod touch, packed with incredible new features including Apple's stunning Retina display, FaceTime video calling, HD video recording, Apple's A4 chip, 3-axis gyro, iOS 4.1, and Game Center — all combined in the thinnest and lightest iPod touch ever. The new iPod touch features up to 40 hours of music playback and seven hours of video playback on a single battery charge.

FaceTime. Look who's talking.

FaceTime brings video calling to iPod touch. So now you can see your friends and talk to them.

Retina display. Truly visionary.

With remarkable 960-by-640 resolution, everything you see and do on iPod touch looks even more incredible.

HD video recording. From HD to OMG.

iPod touch lets you record, edit, and share stunning HD video. And because it's always with you, you'll never miss a great video op.

Even better gaming. One giant leap for funkind.

The A4 processor helps give you even more amazing gaming. And Game Center lets you play against friends anywhere in the world.

The new iPod touch is, internally, very close to being an iPhone 4. It's got the same Retina display, and it's got forward and backward facing cameras (though the rear camera shoots at 960 by 720 resolution, much less than the iPhone 4's) and support for FaceTime video chat. But it's got some clear physical differences, too, most notably its thinness. The last generation of iPod touch was already thin, but it's even thinner now, and quite light. The screen looks great.

There's a new FaceTime app, which you use to initiate FaceTime calls. (To answer the question, how does a device that's not a phone receive FaceTime calls: It does it via e-mail address. You enter e-mail addresses in the FaceTime settings, and then people can call you and you can call them via the FaceTime app or the Contacts app.) And yes, there's a microphone on this iPod touch so you don't have to put on headphones to use FaceTime: It's located on the bottom edge of the device.

Beyond that, I'm not sure what we can say about the iPod touch. It's the thin, small iPod touch we've come to expect, but loaded with many (though not all) of the iPhone 4's features. If you were drooling over the Retina display but didn't want to buy an iPhone 4, now you don't have to.

The audio/video playback of the new fourth-generation iPod touch

Audio formats supported:

AAC (8 to 320 Kbps), Protected AAC (from iTunes Store), HE-AAC, MP3 (8 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, 4, Audible Enhanced Audio, AAX, and AAX+), Apple Lossless, AIFF, and WAV

Video formats supported:

H.264 video up to 720p, 30 frames per second, Main Profile level 3.1 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats
MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps per channel, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats
Motion JPEG (M-JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per second, audio in ulaw, PCM stereo audio in .avi file format