The Pangu team has released a Windows-only jailbreak for iOS 8.1
(but with a caveat which we'll get to in a second). It took just 35 days from the release of iOS 8 to be jailbroken - a huge improvement from the nearly 5 months iOS 7 took to jailbreak.
The big caveat - it's SSH only right now. Meaning Cydia is not installed with the jailbreak. However, this should prove a better release style - you'll remember