This new update, iOS 7.0.4, specifically notes that it fixes an issue that made FaceTime calls fail for some users.

There had been a bug in FaceTime that had caused calls to drop for some users, and now that should be fixed.

The company, however, doesn't otherwise detail what the update includes.

The update is available now for iPhones, iPads, and iPod touches.

Apple has also released iOS 6.1.5 for the 4th gen iPod touch, which provides a fix for the same FaceTime issue.