No there are 4 more they haven't released, when they recorded 13, they are titled, "Isolated Man" , "Hanging By A Thread" , "Season Of The Dead" and "Cry All Night" the band said they would be released, maybe it will be a future release on some tour edition CD, or something.
I also just purchased the DVD Deluxe set, that comes with the live shows they recorded in Melbourne Australia, you can check it out on their official website, www.blacksabbath.com