what are the differences between the iPod touch 3 and 4?

Two cameras uses wifi and 3G.

Has IOS4

FaceTime Retina display HD Video Recording Game Center Music Movies + TV shows App Store iTunes Mail Safari Photos Home Screen Voice Control Maps YouTube Nike + iPod Voice Memos Accessibility More Features From the App Store iMovie iBooks

We added all our most advanced features to iPod touch. Just for the fun of it. Share good times with friends over FaceTime. Shoot scenes in HD. Or play games on the highest-resolution iPod screen ever. In fact, iPod touch has so much technology, you’ll forget it’s an iPod.

FaceTime on iPod touch lets you hang out, catch up, and goof off with friends in an entirely new way. With just a tap, you can see what your friends are up to — literally. Witness a prank in action. Or watch your friend on the other side of the country crack up at your stories from last night — new iPod touch to new iPod touch or iPhone 4 over Wi-Fi. And all you need to get started is an Apple ID and an email account. You can choose an email account you already have or, if you prefer, set up a new one. You’ll never see fun the same way again.

Learn more about FaceTime

Two cameras, two views.

You can never have, or see, too much fun. That’s why iPod touch has two cameras: One on the front, which focuses on you. And one on the back, which focuses on what’s in front of you. FaceTime lets you switch between them at any time during a video call. Just tap a button. So if you’re people-watching at a coffee shop and you spot someone entertaining (or famous), your friend gets to see, too.

The Retina display on iPod touch brings out the awesome in anything on it. That’s because it’s the highest-resolution iPod screen ever, with four times the pixel count of previous iPod models. In fact, there are so many pixels, the human eye can’t distinguish individual ones. Which makes graphics and images stunningly sharp, and text amazingly crisp. Just like the printed page.

Learn more about the Retina display

iPod touch is the always-with-you HD video camera.iMovie lets you make polished movies right on iPod touch.

“You should have seen it!” is a thing of the past. Because with iPod touch, you’ll always have a great HD video camera with you. Say you’re at a party and you see someone popping and locking. You’re ready to capture the moment in all its glory. In high-definition 720p video. You can record video in low-light settings, thanks to the advanced backside illumination sensor. You can even edit and create your own

mini blockbuster right on iPod touch using the new iMovie app — with Apple-designed themes, titles, and transitions. It’s available on the App Store for $4.99.

Learn more about HD video recording

Learn more about video editing with iMovie

It’s time to make a game plan. The new Game Center app on iPod touch lets you add more players to your gaming network. Invite friends to join. Then totally dominate them. Take a look at how your score ranks against your friends and other players of each game. Compare game achievements with your friends. Put together a select group of friends to play with. Or choose to automatically go up against people you don’t know in a multiplayer game. So get in the game. And get your friends in it, too.

Learn more about Game Center

With iPod touch, you don't just play your music. You hear it, and see it, in entirely different ways. Let Genius search your library and automatically create a mix just for you. Or give Genius playlist a go, and Genius will use a song you really love to find other tracks from your library that go great with it. You can also view album art in Cover Flow. Or shake to shuffle for a fresh take on your music library.

Learn more about music

Your favorite movies and TV shows are now playing on a subway train or plane near you. Because you can buy movies and TV shows, or just rent them, right on iPod touch. Shop the iTunes Store and choose from thousands of must-see titles to fill your iPod touch. Then watch them on the amazing 3.5-inch color widescreen Retina display.

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you should definately get Apple iPod touch 32 GB (4th Generation) NEWEST MODEL

Two cameras uses wifi and 3G.

Has IOS4

FaceTime Retina display HD Video Recording Game Center Music Movies + TV shows App Store iTunes Mail Safari Photos Home Screen Voice Control Maps YouTube Nike + iPod Voice Memos Accessibility More Features From the App Store iMovie iBooks

We added all our most advanced features to iPod touch. Just for the fun of it. Share good times with friends over FaceTime. Shoot scenes in HD. Or play games on the highest-resolution iPod screen ever. In fact, iPod touch has so much technology, you’ll forget it’s an iPod.

http://www.amazon.com/Apple-touch-Generation-NEWES...

Also check out at Ebay there are really good deals going

http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Ipod touch 1st generation is slightly thicker than the rest, and has no built in speaker. 2nd and 3rd generation are almost the same but there is only 32gb and 64..4th generation is like the third but has a front camera and one in the back

you can Order your iPod Touch from here

http://7thingsdigital.com/?s=ipod+touch+4th+genera...

Product Details

Up to 40 hours of audio playback or 7 hours of video playback on a single charge

3.5-inch (diagonal) widescreen Multi-Touch display with 960-by-640-pixel resolution (326 pixels per inch)

Support for AAC, Protected AAC (iTunes Store), MP3, MP3 VBR, Audible, Apple Lossless, AIFF, and WAV audio formats; H.264, MPEG-4, and Motion JPEG video codecs in M4V, MP4, MOV, and AVI formats

One-year limited warranty

It's thinner and has retina display, and it has the same chip as the iphone, which means it will be even faster.