You may already know there is a simple Jailbreak tool: evasi0n for iPhone, iPad, iPad mini and iPod Touch running iOS 6.0 through 6.1.2. If you haven’t tried it, you may visit the website to know how to use and download the necessary files
But this happy days will end in one or two months. According to Forbes, Apple is testing the beta release of the next update for iOS (6.1.13). This release will fix at least one of the vulnerabilities that envisOn relies on. This implies, when the iOS 6.1.3 update is released to users, the existing envis0n jailbreak will not work any more.
Of course, the iOS 6.1.3 release probably will only happen in about one to two months. The developers of the envis0n jailbreak still have time to find other bugs to exploit.