No point at present as Cydia is not included but Saurik working on it
http://beginnerstech.co.uk/ios-8-1-jailbreak-for-iphone-6-6-plus-ipad-air-2-and-all-other-devices-released/
Ok so evad3rs team pushed an update that was meant to fix weather app but for some people it didn't. If you want it that bad here's how
1. Delete Appsync
2. Download iFile
3. Use ifile and go to
var/mobile/Library/Caches
And delete these two files
com.apple.mobile.installation.plist...