The Developer winocm has jailbroken successfully his iPhone 5 on 6.1.4 (Available only on this Device).
The Jailbreak has been tested and works successfully.
Even though, this Jailbreak was created without much effort, since the 6.1.4 Firmware is very similar to 6.1.3.
Also, these exploits haven’t ruined the iOS 7 Jailbreak, which, by the way, is about to be released near to the iOS 7 release date. These Exploits won’t be used in upcoming Jailbreaks!