We asked you if you are considering new iPhone 4. Whether or not you go for the new device, if you own an iPod touch or an old iPhone, you got to upgrade to the latest iPhone operating system, called the iOS 4.
Why do you need to upgrade? Well, the new OS that Apple launched along with iPhone 4 has some amazing features. Multitasking, ability to create folders, creating playlists directly on iPod/iPhone, iBooks and much more.
Tempted, already? Check out Ars Technica’s super-comprehensive iOS 4 review. Probably the best one among hundreds of such articles out there. (If you are an iPod touch user, check out Apple’s page on what the iOS 4 update means for you.)