The revised and updated iPod touch offers a slimmed down profile and bulked up features. While the change is more evolutionary than revolutionary, it makes using the player a lot more pleasant.
It's odd that Apple's marketing has dubbed this version the "funnest iPod ever" in ads, since all the fun features it's showcasing—the ability to download games, a built-in accelerometer, multi-touch controls—aren't new with this version. Still, there are plenty of new features to get excited about.
The Outside
Pick up the iPod Touch and you'll notice immediately that it's thinner than its predecessor. All versions are just 0.33-inches deep (as well as 4.3-inches tall and 2.4-inches wide, with a weight of 4.05 ounces). The back is now gracefully rounded, so it feels better in the hand.
The iPod touch has gained a few worthwhile physical features already found on the iPhone. It now has external volume buttons on the top left, so users can nudge the volume up or down without unlocking the screen. The touch also now has a speaker—an iPod first—so users can listen without headphones or earbuds. It doesn't provide the fullest, richest sound, naturally, but it's a helpful addition for those times when you want to share a song with some friends.
The Inside
The iPod touch comes with iPod software version 2.1.1, so you won't need to upgrade the software to get access to the online App Store. (Older iPod touch owners had to pay for the upgrade.)
That means this iPod touch also supports the new Genius feature, which enables the iPod to create playlists based off one starter song. In our testing, the Genius feature performed amazingly well, creating playlists that captured the mood and style of the original song, while still offering some variety. We spoke to an Apple representative who said that the algorithms behind the Genius feature analyze the playlists of millions of iTunes users, examining how they combine songs. They also consider iTunes Store purchases, seeing which songs are bought together. Contrary to what we expected, it doesn't create playlists by matching genres or beats-per-minute.