New Skype for iOS 8 uses extensions for answering calls from the iPhone lock screen

Once you upgrade to the latest Microsoft-owned Skype client for iOS 8, you’ll be able to answer incoming voice or video calls much faster. The newest Skype version takes advantage of extensions in Apple’s mobile software, allowing Skype notifications to appear right on the lock screen of an iPhone. These are actionable notifications — both on the lock screen and though the regular drop-down notification method — so one tap picks up the call. The updated Skype client is available for free in the iTunes App Store.