Apple released iOS 6.1.3 beta 2 to developers, patching at least one of the vulnerabilities used by evasi0n thereby rendering the jailbreak tool useless — the time zone settings vulnerability. David Wang aka @planetbeing, has confirmed that iOS 6.1.3 beta 2 does patch one of the vulnerabilities that they exploited in their evasi0n tool.

http://apple.slashdot.org/story/13/0...si0n-jailbreak