According to the Apple’s plan, next iOS version will be iOS 8.2. Actually, it will be one of the major releases of iOS 8+ versions. They will release it for same iDevices, which is available iOS 8+ versions. You can test about the iOS 8.2 version by uploading beta version of it. Apple already has released one beta version of this for the developers.
When we talk about iOS 8.2 jailbreak, Pangu Team’s involving will be most important thing. Most probably, they will release Pangu8 1.2.1 version as the supporting jailbreak tool for this version. Get more details about Pangu 8 1.2.1 tool version using following link.