If changelog is correct - there are no Tap2wake, no 4K, TimeShift and smart features - no matter how optimised it'll be without new features it's just faster JB.
We already have almost all from Z2 so once again, we'll have to rely on our brains....
is preparing systemUI for KK and I'm sure we will all work on porting and moving apps and features from Z2 KK.
I'm not sure I'll even flash KK.
I'm sure I won't flash it now, without root privilege...
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