iOS 4 lançado

Saiu oficialmente o iOS4 com todos os recursos já conhecidos e aguardados, como:
 * multitarefa
 * folders
 * tethering
 * desabilitar dados de celular
 * zoom digital

Segue trecho e link da notícia original:

Using iOS 4 - Gizmodo:

iOS 4 is here for iPhone and iPod touch. You're probably downloading right now. Here's what you need to know to get the most out of iOS 4.

First off, have you actually upgraded? If not, Here's how.

Here are all the new things that are in iOS 4, and how you can try them. While you're trying this, go and download the apps updated for iOS 4.