Saurik has tweeted to announce that the iOS 8.0 - 8.1 jailbreak is now 'stable enough' so those who have been holding off on jailbreaking their devices can now dive in.
The iPhone Dev-Team has just released RedSn0w 0.9.9b6 which offers quick iOS 5 jailbreaking for Windows and fixes Location Services issue for iPhone 3GS devices running on the 06.15 baseband.
Hacker Qixun Zhao of the Qihoo 360 Vulcan Team (also known as @S0rryMybad) has released a remote jailbreak PoC (proof of concept) for iOS 12.0 - iOS 12.1.1.