Microsoft's Skype team today announced a massive redesign of its app for iOS, which the company says is now its "most refined version yet". The app is more than just an update - Microsoft says that it has completely rewritten this latest version "from the ground up". Skype 5.0 for iPhone launches worldwide "in about a week" and a new version is also in the works for iPad - although Microsoft hasn't yet announced when that is expected to arrive. For now, check out the video preview for the new iPhone app below: