iOS 7.0.4 is here with fix for FaceTime call issue for iPhone, and iPod Touch includes a number of improvements and bug fixes for the operating system. According to Apple, some users had experiencing with FaceTime calls being fail. Apple also did release iOS 6.1.5 for the fourth generation iPod Touch to fix same issue for FaceTime.
How to get it? You can check for it via Settings on your iPhone or plug it via iTunes when you turn Wi-Fi on. It is approximately 37.6MB to download.