Man you guys need to relax about the KK update. I know the feeling of wanting it and wanting it now, but seriously, KK isn't even that big of a deal. Not to mention the biggest let down with the KK Xperia update is the fact that there isn't a mod from Sony to bypass the stupid SDCard read write crap that is now in KK. Stay on 4.3, you'll be happy you did.
Future Phone: Don't know yet?
Current Phones: Xperia Z Ultra 6806
Past: Samsung Galaxy Note 3 AT&T [Unlocked], LG Optimus G Pro AT&T, LG Optimus G AT&T, LG Google Nexus 4, Samsung Galaxy S3 AT&T, Samsung GS2 AT&T, Sony Xperia ion AT&T, Samsung Infuse AT&T(First Android Phone), All iPhones before that.