Apple released iOS 8.1.2 on Tuesday. The update doesn’t appear to be that major just yet, and Apple says you should notice bug fixes and a solution to a “problem where ringtones purchased through the iTunes Store may have been removed from your device.” Apple said you can restore those ringtones by visiting http://itunes.com/restore-tones from your phone.
The update is relatively small, coming in at about 25MB, and you should find it on your iPad, iPhone and iPod touch devices now. To update manually, head to Settings > General > Software Update.