No, apparently. See https://twitter.com/winocm/status/436923366147375104 https://twitter.com/winocm/status/436923366147375104 and https://twitter.com/winocm/sta

No, apparently. See https://twitter.com/winocm/status/436923366147375104 https://twitter.com/winocm/status/436923366147375104 and https://twitter.com/winocm/status/436923608762695680 https://twitter.com/winocm/status/436923608762695680 for a jailbreak developer saying that it doesn't seem to fix any jailbreak bugs. He's not one of the developers of the iOS 7 jailbreak, but he knows what he's talking about.