Although Apple has closed the signing window for iOS 8.1.2, there's still an inkling of hope for those of you who are developers and wish to jailbreak your devices. How so? iOS 8.2 beta 2 is still being signed by Apple, and this firmware is still jailbreakable.
What does this mean? It means that even if you're currently on iOS 8.1.3 or any other firmware, you can downgrade or upgrade to iOS 8.2 beta 2 and then jailbreak your device using the PP Jailbreak tool for Mac.