Skype updated for iOS 4, background VoIP is a go (update: no plans to charge for 3G use)By R. Miller, 07.21.2010
iOS 4 gold works with any compatible iPhone / iPod touch via iTunes 9.2, jailbreak also updatedBy R. Miller, 06.08.2010
AT&T makes sweeping changes to data plans, iPhone tethering coming at OS 4 launchBy C. Ziegler, 06.02.2010