For all intents and purposes, there will be no further jail breaks made/released for iOS 6. So, no, there is no jail break for iOS 6.1.3, nor will there ever be one.
The only thing you can do (if you are on that iOS) is hope that (1) iOS 7 gets released quickly and (2) the jail break community will be able to jail break it [soon]. Sorry.
With that, and to prevent redundancies, this thread is closed. Thanks for your understanding.
Marilyn