Now that it has been confirmed that iOS 6.1.3 will indeed patch the evasi0n untethered jailbreak, it is now important to note that the opportunity to jailbreak iOS 6 will soon be gone. Once Apple seeds iOS 6.1.3 to the public, it will stop signing all previous firmware versions.
What this means is if you’re not already updated to iOS 6.1.2, the last version that will support the jailbreak, you will want to do so as soon as possible. When iOS 6.1.3 hits, you will lose the ability to update to or restore to any older software version. Time is ticking.